diff --git a/docs/ansible.md b/docs/ansible.md
index 0aff5915..c7727b25 100644
--- a/docs/ansible.md
+++ b/docs/ansible.md
@@ -1,13 +1,13 @@
 # Ansible
 - [Configuration Management with Ansible DevOps Tool](#configuration-management-with-ansible-devops-tool)
 - [Red Hat Ansible Automation Platform](#red-hat-ansible-automation-platform)
-  - [Automation services catalog](#automation-services-catalog)
-  - [Red Hat Certified Ansible Content Collections](#red-hat-certified-ansible-content-collections)
+	- [Automation services catalog](#automation-services-catalog)
+	- [Red Hat Certified Ansible Content Collections](#red-hat-certified-ansible-content-collections)
 - [Ansible Cheat Sheets](#ansible-cheat-sheets)
 - [Running Ansible Playbooks](#running-ansible-playbooks)
-  - [Running Ansible Playbooks From Jenkins](#running-ansible-playbooks-from-jenkins)
-  - [Ansible Tower & Ansible AWX. Running Ansible Playbooks From Ansible Tower](#ansible-tower--ansible-awx-running-ansible-playbooks-from-ansible-tower)
-  - [Alternatives to Ansible Tower](#alternatives-to-ansible-tower)
+	- [Running Ansible Playbooks From Jenkins](#running-ansible-playbooks-from-jenkins)
+	- [Ansible Tower & Ansible AWX. Running Ansible Playbooks From Ansible Tower](#ansible-tower--ansible-awx-running-ansible-playbooks-from-ansible-tower)
+	- [Alternatives to Ansible Tower](#alternatives-to-ansible-tower)
 - [Ansible Molecule. Development and Testing of Ansible Roles](#ansible-molecule-development-and-testing-of-ansible-roles)
 - [Books](#books)
 - [Ansible Galaxy Roles](#ansible-galaxy-roles)
diff --git a/docs/api.md b/docs/api.md
index 97238c0a..31dfd408 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -2,20 +2,20 @@
 - [APIs](#apis)
 - [Motivation](#motivation)
 - [State of the API Report](#state-of-the-api-report)
-  - [Postman State of the API Report](#postman-state-of-the-api-report)
-  - [Smartbear State of the API Report](#smartbear-state-of-the-api-report)
+	- [Postman State of the API Report](#postman-state-of-the-api-report)
+	- [Smartbear State of the API Report](#smartbear-state-of-the-api-report)
 - [Types of API Protocols](#types-of-api-protocols)
-  - [SOAP API Protocol (Simple Object Access Protocol)](#soap-api-protocol-simple-object-access-protocol)
-  - [REST API Protocol (Representational State Transfer)](#rest-api-protocol-representational-state-transfer)
-    - [OpenAPI Specification (originally known as the Swagger Specification)](#openapi-specification-originally-known-as-the-swagger-specification)
-  - [RPC API Protocol (Remote Procedure Call)](#rpc-api-protocol-remote-procedure-call)
-    - [gRPC](#grpc)
+	- [SOAP API Protocol (Simple Object Access Protocol)](#soap-api-protocol-simple-object-access-protocol)
+	- [REST API Protocol (Representational State Transfer)](#rest-api-protocol-representational-state-transfer)
+		- [OpenAPI Specification (originally known as the Swagger Specification)](#openapi-specification-originally-known-as-the-swagger-specification)
+	- [RPC API Protocol (Remote Procedure Call)](#rpc-api-protocol-remote-procedure-call)
+		- [gRPC](#grpc)
 - [Comparisons](#comparisons)
-  - [SOAP vs REST](#soap-vs-rest)
-  - [REST vs OpenAPI vs gRPC](#rest-vs-openapi-vs-grpc)
+	- [SOAP vs REST](#soap-vs-rest)
+	- [REST vs OpenAPI vs gRPC](#rest-vs-openapi-vs-grpc)
 - [Tools](#tools)
-  - [API Testing](#api-testing)
-  - [GraphQL](#graphql)
+	- [API Testing](#api-testing)
+	- [GraphQL](#graphql)
 - [Free Web Services (Public APIs)](#free-web-services-public-apis)
 - [Related](#related)
 - [API Business Models](#api-business-models)
diff --git a/docs/cheatsheets.md b/docs/cheatsheets.md
index 1d133e48..31a59946 100644
--- a/docs/cheatsheets.md
+++ b/docs/cheatsheets.md
@@ -2,22 +2,22 @@
 - [Cheat Sheets](#cheat-sheets)
 - [eBooks](#ebooks)
 - [Documentation Browser for Software Developers](#documentation-browser-for-software-developers)
-  - [Dash for MacOS (paid)](#dash-for-macos-paid)
-  - [Velocity (Windows, paid)](#velocity-windows-paid)
-  - [Zeal (Windows, Linux, Free)](#zeal-windows-linux-free)
+	- [Dash for MacOS (paid)](#dash-for-macos-paid)
+	- [Velocity (Windows, paid)](#velocity-windows-paid)
+	- [Zeal (Windows, Linux, Free)](#zeal-windows-linux-free)
 - [Kubernetes Knowledge Hubs and Glossary](#kubernetes-knowledge-hubs-and-glossary)
 - [Kubectl Cheat Sheets](#kubectl-cheat-sheets)
 - [Docker Cheat Sheets](#docker-cheat-sheets)
 - [Git and GitHub Cheat Sheets](#git-and-github-cheat-sheets)
-  - [Git Flow Cheat Sheets](#git-flow-cheat-sheets)
-  - [Sourcetree Cheat Sheet](#sourcetree-cheat-sheet)
-  - [GitKraken Git Cheat](#gitkraken-git-cheat)
+	- [Git Flow Cheat Sheets](#git-flow-cheat-sheets)
+	- [Sourcetree Cheat Sheet](#sourcetree-cheat-sheet)
+	- [GitKraken Git Cheat](#gitkraken-git-cheat)
 - [Ansible Cheat Sheets](#ansible-cheat-sheets)
 - [Packer and Terraform Cheat Sheets](#packer-and-terraform-cheat-sheets)
 - [Linux Command Cheat Sheets](#linux-command-cheat-sheets)
-  - [SSH Cheat Sheets](#ssh-cheat-sheets)
+	- [SSH Cheat Sheets](#ssh-cheat-sheets)
 - [OpenShift Cheat Sheets](#openshift-cheat-sheets)
-  - [Debezium Cheat Sheets](#debezium-cheat-sheets)
+	- [Debezium Cheat Sheets](#debezium-cheat-sheets)
 - [Kubernetes Operator Cheat Sheets](#kubernetes-operator-cheat-sheets)
 - [Kubernetes POD Cheat Sheets](#kubernetes-pod-cheat-sheets)
 - [Buildah Cheat Sheets](#buildah-cheat-sheets)
diff --git a/docs/container-managers.md b/docs/container-managers.md
index 3aea3e88..c3a4df20 100644
--- a/docs/container-managers.md
+++ b/docs/container-managers.md
@@ -1,19 +1,19 @@
 # Container Runtimes/Managers, Base Images and Container Tools. Podman, Buildah & Skopeo
 - [Introduction](#introduction)
 - [OCI Project](#oci-project)
-  - [OCI Runtimes](#oci-runtimes)
-    - [runc](#runc)
-    - [crun](#crun)
-  - [OCI Monitors](#oci-monitors)
+	- [OCI Runtimes](#oci-runtimes)
+		- [runc](#runc)
+		- [crun](#crun)
+	- [OCI Monitors](#oci-monitors)
 - [Container Managers / Container Runtimes (CRI runtimes)](#container-managers--container-runtimes-cri-runtimes)
-  - [CRI-O](#cri-o)
-  - [Podman. Pod Manager tool](#podman-pod-manager-tool)
-    - [Containers In High Security Environments with Podman](#containers-in-high-security-environments-with-podman)
+	- [CRI-O](#cri-o)
+	- [Podman. Pod Manager tool](#podman-pod-manager-tool)
+		- [Containers In High Security Environments with Podman](#containers-in-high-security-environments-with-podman)
 - [Container Images](#container-images)
-  - [Red Hat Universal Base Image](#red-hat-universal-base-image)
+	- [Red Hat Universal Base Image](#red-hat-universal-base-image)
 - [Container Tools](#container-tools)
-  - [Buildah](#buildah)
-  - [Skopeo](#skopeo)
+	- [Buildah](#buildah)
+	- [Skopeo](#skopeo)
 
 ## Introduction
 - [A Practical Introduction to Container Terminology](https://developers.redhat.com/blog/2018/02/22/container-terminology-practical-introduction/)
diff --git a/docs/customer.md b/docs/customer.md
index ecb1f80e..190326ef 100644
--- a/docs/customer.md
+++ b/docs/customer.md
@@ -1,8 +1,8 @@
 # Customer Success Stories
 - [BMW IT-Zentrum (Munich)](#bmw-it-zentrum-munich)
-  - [BMW ConnectedDrive and OpenShift](#bmw-connecteddrive-and-openshift)
-  - [BMW InnovationLab](#bmw-innovationlab)
-  - [GAIA-X](#gaia-x)
+	- [BMW ConnectedDrive and OpenShift](#bmw-connecteddrive-and-openshift)
+	- [BMW InnovationLab](#bmw-innovationlab)
+	- [GAIA-X](#gaia-x)
 - [Carrefour Spain](#carrefour-spain)
 
 ## BMW IT-Zentrum (Munich)
diff --git a/docs/databases.md b/docs/databases.md
index 1b6c6a1a..8701e940 100644
--- a/docs/databases.md
+++ b/docs/databases.md
@@ -8,27 +8,27 @@
 - [Spilo PostgreSQL Operator](#spilo-postgresql-operator)
 - [Zalando PostgreSQL Operator](#zalando-postgresql-operator)
 - [Crunchy Data PostgreSQL Operator](#crunchy-data-postgresql-operator)
-  - [Crunchy Data Developer Portal](#crunchy-data-developer-portal)
-  - [Crunchy Data Postgres Operator in OpenShift 4. Overview & Proof of Concept](#crunchy-data-postgres-operator-in-openshift-4-overview--proof-of-concept)
-    - [Crunchydata Postgres Operator 3.5](#crunchydata-postgres-operator-35)
-    - [Crunchydata Postgres Operator 4.0.1](#crunchydata-postgres-operator-401)
-    - [Crunchydata Postgres Operator 4.0.1 Community Edition](#crunchydata-postgres-operator-401-community-edition)
-      - [Service Accounts](#service-accounts)
-      - [Roles assigned to Service Accounts](#roles-assigned-to-service-accounts)
-      - [Security Context Constraints (SCC)](#security-context-constraints-scc)
-        - [SCC Recommendations](#scc-recommendations)
-      - [Add a SCC to a Project](#add-a-scc-to-a-project)
-        - [Workflow1 without custom Service Account and without DeploymentConfig](#workflow1-without-custom-service-account-and-without-deploymentconfig)
-        - [Workflow2 with custom Service Account and without DeploymentConfig](#workflow2-with-custom-service-account-and-without-deploymentconfig)
-        - [Workflow3 with custom service Account and DeploymentConfig](#workflow3-with-custom-service-account-and-deploymentconfig)
-      - [Environment setup. Port Forward and WSL](#environment-setup-port-forward-and-wsl)
-      - [Cluster Deployment and Operation with pgo](#cluster-deployment-and-operation-with-pgo)
-      - [Psql access from postgres operator POD](#psql-access-from-postgres-operator-pod)
-      - [List Databases with psql](#list-databases-with-psql)
-      - [Access from another POD within the cluster with psql client](#access-from-another-pod-within-the-cluster-with-psql-client)
-      - [Access from another POD within the cluster with Pgadmin4 of Crunchy containers Community Edition](#access-from-another-pod-within-the-cluster-with-pgadmin4-of-crunchy-containers-community-edition)
-      - [Debugging Crunchydata Postgres Operator 4.0.1 Community Edition](#debugging-crunchydata-postgres-operator-401-community-edition)
-    - [Certified Crunchydata Postgres Operator (OLM/OperatorHub). Manual Setup](#certified-crunchydata-postgres-operator-olmoperatorhub-manual-setup)
+	- [Crunchy Data Developer Portal](#crunchy-data-developer-portal)
+	- [Crunchy Data Postgres Operator in OpenShift 4. Overview & Proof of Concept](#crunchy-data-postgres-operator-in-openshift-4-overview--proof-of-concept)
+		- [Crunchydata Postgres Operator 3.5](#crunchydata-postgres-operator-35)
+		- [Crunchydata Postgres Operator 4.0.1](#crunchydata-postgres-operator-401)
+		- [Crunchydata Postgres Operator 4.0.1 Community Edition](#crunchydata-postgres-operator-401-community-edition)
+			- [Service Accounts](#service-accounts)
+			- [Roles assigned to Service Accounts](#roles-assigned-to-service-accounts)
+			- [Security Context Constraints (SCC)](#security-context-constraints-scc)
+				- [SCC Recommendations](#scc-recommendations)
+			- [Add a SCC to a Project](#add-a-scc-to-a-project)
+				- [Workflow1 without custom Service Account and without DeploymentConfig](#workflow1-without-custom-service-account-and-without-deploymentconfig)
+				- [Workflow2 with custom Service Account and without DeploymentConfig](#workflow2-with-custom-service-account-and-without-deploymentconfig)
+				- [Workflow3 with custom service Account and DeploymentConfig](#workflow3-with-custom-service-account-and-deploymentconfig)
+			- [Environment setup. Port Forward and WSL](#environment-setup-port-forward-and-wsl)
+			- [Cluster Deployment and Operation with pgo](#cluster-deployment-and-operation-with-pgo)
+			- [Psql access from postgres operator POD](#psql-access-from-postgres-operator-pod)
+			- [List Databases with psql](#list-databases-with-psql)
+			- [Access from another POD within the cluster with psql client](#access-from-another-pod-within-the-cluster-with-psql-client)
+			- [Access from another POD within the cluster with Pgadmin4 of Crunchy containers Community Edition](#access-from-another-pod-within-the-cluster-with-pgadmin4-of-crunchy-containers-community-edition)
+			- [Debugging Crunchydata Postgres Operator 4.0.1 Community Edition](#debugging-crunchydata-postgres-operator-401-community-edition)
+		- [Certified Crunchydata Postgres Operator (OLM/OperatorHub). Manual Setup](#certified-crunchydata-postgres-operator-olmoperatorhub-manual-setup)
 - [Oracle 12c on OpenShift Container Platform](#oracle-12c-on-openshift-container-platform)
 - [SQL Server](#sql-server)
 - [MySQL](#mysql)
diff --git a/docs/demos.md b/docs/demos.md
index 1b17767a..e0c20a7b 100644
--- a/docs/demos.md
+++ b/docs/demos.md
@@ -2,55 +2,55 @@
 - [DevOps Screencasts](#devops-screencasts)
 - [DevOps Blogs](#devops-blogs)
 - [DevOps Demos](#devops-demos)
-  - [Ansible and Ansible Tower](#ansible-and-ansible-tower)
-  - [GitOps](#gitops)
+	- [Ansible and Ansible Tower](#ansible-and-ansible-tower)
+	- [GitOps](#gitops)
 - [Kubernetes Demos](#kubernetes-demos)
-  - [CI/CD with SpringBoot for Kubernetes](#cicd-with-springboot-for-kubernetes)
-  - [Kubernetes CKAD Example Exam Questions Practical Challenge Series](#kubernetes-ckad-example-exam-questions-practical-challenge-series)
-  - [Istio](#istio)
-  - [Rancher](#rancher)
-  - [GitOps Workflow with Flux](#gitops-workflow-with-flux)
-  - [Amazon EKS. Deploy example microservices on EKS](#amazon-eks-deploy-example-microservices-on-eks)
-  - [Environments to learn and practice Kubernetes security](#environments-to-learn-and-practice-kubernetes-security)
+	- [CI/CD with SpringBoot for Kubernetes](#cicd-with-springboot-for-kubernetes)
+	- [Kubernetes CKAD Example Exam Questions Practical Challenge Series](#kubernetes-ckad-example-exam-questions-practical-challenge-series)
+	- [Istio](#istio)
+	- [Rancher](#rancher)
+	- [GitOps Workflow with Flux](#gitops-workflow-with-flux)
+	- [Amazon EKS. Deploy example microservices on EKS](#amazon-eks-deploy-example-microservices-on-eks)
+	- [Environments to learn and practice Kubernetes security](#environments-to-learn-and-practice-kubernetes-security)
 - [Red Hat Demo Central](#red-hat-demo-central)
-  - [Cloud Native Development Architectural Diagrams Demos](#cloud-native-development-architectural-diagrams-demos)
+	- [Cloud Native Development Architectural Diagrams Demos](#cloud-native-development-architectural-diagrams-demos)
 - [OpenShift Demos](#openshift-demos)
-  - [OpenShift VS Kubernetes](#openshift-vs-kubernetes)
-  - [IBM Cloud Pak Playbooks](#ibm-cloud-pak-playbooks)
-  - [Knative](#knative)
-  - [OpenShift Pipelines Workshop (Tekton)](#openshift-pipelines-workshop-tekton)
-  - [ArgoCD](#argocd)
-  - [GitLab Pipelines on OpenShift](#gitlab-pipelines-on-openshift)
-  - [Deploying Web Applications with Eclipse JKube (formerly known as fabric8)](#deploying-web-applications-with-eclipse-jkube-formerly-known-as-fabric8)
-  - [Monitoring Services with OpenShift ServiceMesh](#monitoring-services-with-openshift-servicemesh)
-  - [Red Hat Migration Toolkit for Applications](#red-hat-migration-toolkit-for-applications)
-  - [Red Hat Advanced Cluster Management RHACM](#red-hat-advanced-cluster-management-rhacm)
-  - [OKD](#okd)
-  - [Helm 3 on OpenShift](#helm-3-on-openshift)
-  - [Writing Kubernetes Operators](#writing-kubernetes-operators)
-  - [Customized Reports with Metering Operator (monitoring k8s resources)](#customized-reports-with-metering-operator-monitoring-k8s-resources)
-  - [Red Hat AMQ Streams (Kafka)](#red-hat-amq-streams-kafka)
+	- [OpenShift VS Kubernetes](#openshift-vs-kubernetes)
+	- [IBM Cloud Pak Playbooks](#ibm-cloud-pak-playbooks)
+	- [Knative](#knative)
+	- [OpenShift Pipelines Workshop (Tekton)](#openshift-pipelines-workshop-tekton)
+	- [ArgoCD](#argocd)
+	- [GitLab Pipelines on OpenShift](#gitlab-pipelines-on-openshift)
+	- [Deploying Web Applications with Eclipse JKube (formerly known as fabric8)](#deploying-web-applications-with-eclipse-jkube-formerly-known-as-fabric8)
+	- [Monitoring Services with OpenShift ServiceMesh](#monitoring-services-with-openshift-servicemesh)
+	- [Red Hat Migration Toolkit for Applications](#red-hat-migration-toolkit-for-applications)
+	- [Red Hat Advanced Cluster Management RHACM](#red-hat-advanced-cluster-management-rhacm)
+	- [OKD](#okd)
+	- [Helm 3 on OpenShift](#helm-3-on-openshift)
+	- [Writing Kubernetes Operators](#writing-kubernetes-operators)
+	- [Customized Reports with Metering Operator (monitoring k8s resources)](#customized-reports-with-metering-operator-monitoring-k8s-resources)
+	- [Red Hat AMQ Streams (Kafka)](#red-hat-amq-streams-kafka)
 - [Jenkins Demos](#jenkins-demos)
-  - [Jenkins Declarative Pipelines with OpenShift](#jenkins-declarative-pipelines-with-openshift)
-  - [OpenShift Pipelines with S2i and Jenkins Blue Ocean](#openshift-pipelines-with-s2i-and-jenkins-blue-ocean)
-  - [Jenkins Configuration as Code on Kubernetes](#jenkins-configuration-as-code-on-kubernetes)
-  - [From Jenkins Freestyle jobs to Pipeline, with JobDSL. Seed jobs](#from-jenkins-freestyle-jobs-to-pipeline-with-jobdsl-seed-jobs)
-  - [SDKMAN](#sdkman)
-  - [Jenkins Scripts](#jenkins-scripts)
-  - [Postman & Newman API Automated Tests](#postman--newman-api-automated-tests)
-  - [Monitoring Jenkins with Grafana](#monitoring-jenkins-with-grafana)
+	- [Jenkins Declarative Pipelines with OpenShift](#jenkins-declarative-pipelines-with-openshift)
+	- [OpenShift Pipelines with S2i and Jenkins Blue Ocean](#openshift-pipelines-with-s2i-and-jenkins-blue-ocean)
+	- [Jenkins Configuration as Code on Kubernetes](#jenkins-configuration-as-code-on-kubernetes)
+	- [From Jenkins Freestyle jobs to Pipeline, with JobDSL. Seed jobs](#from-jenkins-freestyle-jobs-to-pipeline-with-jobdsl-seed-jobs)
+	- [SDKMAN](#sdkman)
+	- [Jenkins Scripts](#jenkins-scripts)
+	- [Postman & Newman API Automated Tests](#postman--newman-api-automated-tests)
+	- [Monitoring Jenkins with Grafana](#monitoring-jenkins-with-grafana)
 - [Jenkins X](#jenkins-x)
 - [Nexus3 on Kubernetes](#nexus3-on-kubernetes)
 - [GitLab](#gitlab)
 - [Spring PetClinic Sample Application](#spring-petclinic-sample-application)
-  - [Modular Pipeline Library (MPL). Petclinic Pipeline example with MPL](#modular-pipeline-library-mpl-petclinic-pipeline-example-with-mpl)
-  - [PetClinic on Kubernetes:](#petclinic-on-kubernetes)
-  - [PetClinic Docker images:](#petclinic-docker-images)
-  - [OpenShift.io Samples](#openshiftio-samples)
+	- [Modular Pipeline Library (MPL). Petclinic Pipeline example with MPL](#modular-pipeline-library-mpl-petclinic-pipeline-example-with-mpl)
+	- [PetClinic on Kubernetes:](#petclinic-on-kubernetes)
+	- [PetClinic Docker images:](#petclinic-docker-images)
+	- [OpenShift.io Samples](#openshiftio-samples)
 - [AWS Demos](#aws-demos)
 - [Azure DevOps Demos](#azure-devops-demos)
 - [Google DevOps Demos](#google-devops-demos)
-  - [GitOps with Anthos Config Management](#gitops-with-anthos-config-management)
+	- [GitOps with Anthos Config Management](#gitops-with-anthos-config-management)
 - [Quarkus Demos](#quarkus-demos)
 - [Kafka](#kafka)
 - [Apache Camel & ActiveMQ. Event driven integration](#apache-camel--activemq-event-driven-integration)
diff --git a/docs/developerportals.md b/docs/developerportals.md
index 7b1f4bb7..f6fa98c1 100644
--- a/docs/developerportals.md
+++ b/docs/developerportals.md
@@ -1,27 +1,27 @@
 # API Marketplaces. API Management with API Gateways & Developer Portals 
 - [Introduction](#introduction)
 - [API Landscape and API Marketplaces](#api-landscape-and-api-marketplaces)
-  - [API Marketplaces](#api-marketplaces)
-  - [Rapid API Marketplace. Free Public & Open REST APIs](#rapid-api-marketplace-free-public--open-rest-apis)
-  - [Apis.guru Large Archive of Sample OpenAPI Descriptions](#apisguru-large-archive-of-sample-openapi-descriptions)
+	- [API Marketplaces](#api-marketplaces)
+	- [Rapid API Marketplace. Free Public & Open REST APIs](#rapid-api-marketplace-free-public--open-rest-apis)
+	- [Apis.guru Large Archive of Sample OpenAPI Descriptions](#apisguru-large-archive-of-sample-openapi-descriptions)
 - [API Managers with API Gateways & Developer Portals](#api-managers-with-api-gateways--developer-portals)
-  - [API Management vs API Gateway vs Developer Portals](#api-management-vs-api-gateway-vs-developer-portals)
-  - [3scale API Manager](#3scale-api-manager)
-  - [Google Apigee API Manager](#google-apigee-api-manager)
-  - [IBM API Connect](#ibm-api-connect)
-  - [WSO2 API Manager](#wso2-api-manager)
-  - [Kong API Manager](#kong-api-manager)
-  - [Tyk API Manager](#tyk-api-manager)
-  - [Axway API Manager](#axway-api-manager)
-  - [MuleSoft API Manager](#mulesoft-api-manager)
-  - [Gloo Federation API Gateway Management](#gloo-federation-api-gateway-management)
-  - [Backstage Developer Portal](#backstage-developer-portal)
-  - [APISIX](#apisix)
+	- [API Management vs API Gateway vs Developer Portals](#api-management-vs-api-gateway-vs-developer-portals)
+	- [3scale API Manager](#3scale-api-manager)
+	- [Google Apigee API Manager](#google-apigee-api-manager)
+	- [IBM API Connect](#ibm-api-connect)
+	- [WSO2 API Manager](#wso2-api-manager)
+	- [Kong API Manager](#kong-api-manager)
+	- [Tyk API Manager](#tyk-api-manager)
+	- [Axway API Manager](#axway-api-manager)
+	- [MuleSoft API Manager](#mulesoft-api-manager)
+	- [Gloo Federation API Gateway Management](#gloo-federation-api-gateway-management)
+	- [Backstage Developer Portal](#backstage-developer-portal)
+	- [APISIX](#apisix)
 - [Mobile Developer Portals](#mobile-developer-portals)
 - [Automotive](#automotive)
-  - [Auto API](#auto-api)
-  - [Smartcar](#smartcar)
-  - [Others](#others)
+	- [Auto API](#auto-api)
+	- [Smartcar](#smartcar)
+	- [Others](#others)
 - [Banking](#banking)
 - [Insurance](#insurance)
 - [Telecom](#telecom)
diff --git a/docs/devops.md b/docs/devops.md
index 787202d5..88b4f91c 100644
--- a/docs/devops.md
+++ b/docs/devops.md
@@ -7,12 +7,12 @@
 - [Blogs](#blogs)
 - [Xebia Labs and DevOps](#xebia-labs-and-devops)
 - [DevOps Tools](#devops-tools)
-  - [Relay](#relay)
+	- [Relay](#relay)
 - [Netflix and DevOps](#netflix-and-devops)
 - [Public Cloud DevOps](#public-cloud-devops)
-  - [AWS DevOps](#aws-devops)
-  - [Azure DevOps](#azure-devops)
-  - [Google Cloud Platform](#google-cloud-platform)
+	- [AWS DevOps](#aws-devops)
+	- [Azure DevOps](#azure-devops)
+	- [Google Cloud Platform](#google-cloud-platform)
 
 ## Introduction to Digital Business Transformation
 - [What Is AIOps, BizDevOps, CloudOps, DevOps, ITOps, NoOps? A Gentle Introduction to Digital Business Transformation 🌟](https://stxnext.com/blog/2019/04/25/aiops-bizdevops-cloudops-devops-itops-noops-introduction-digital-business-transformation/)
diff --git a/docs/devsecops.md b/docs/devsecops.md
index 91506ce0..66067759 100644
--- a/docs/devsecops.md
+++ b/docs/devsecops.md
@@ -7,20 +7,20 @@
 - [Project Calico](#project-calico)
 - [Security Patterns for Microservice Architectures](#security-patterns-for-microservice-architectures)
 - [Anchore Container Security Solutions for DevSecOps](#anchore-container-security-solutions-for-devsecops)
-  - [Secure Container Based CI/CD Workflows](#secure-container-based-cicd-workflows)
-  - [Securing Kubernetes With Anchore](#securing-kubernetes-with-anchore)
+	- [Secure Container Based CI/CD Workflows](#secure-container-based-cicd-workflows)
+	- [Securing Kubernetes With Anchore](#securing-kubernetes-with-anchore)
 - [GitHub security](#github-security)
 - [Databases in DMZ and Intranet](#databases-in-dmz-and-intranet)
 - [Removing Credentials From Git Repo](#removing-credentials-from-git-repo)
 - [Pentesting](#pentesting)
 - [Credential Managers](#credential-managers)
-  - [keycloak](#keycloak)
-  - [Git Credential Manager Core](#git-credential-manager-core)
+	- [keycloak](#keycloak)
+	- [Git Credential Manager Core](#git-credential-manager-core)
 - [GitOps Secret Management](#gitops-secret-management)
-  - [HashiCorp Vault](#hashicorp-vault)
-  - [CyberArk and Ansible](#cyberark-and-ansible)
-  - [SOPS for Kubernetes](#sops-for-kubernetes)
-  - [Alternatives](#alternatives)
+	- [HashiCorp Vault](#hashicorp-vault)
+	- [CyberArk and Ansible](#cyberark-and-ansible)
+	- [SOPS for Kubernetes](#sops-for-kubernetes)
+	- [Alternatives](#alternatives)
 - [Serverless Security Best Practices](#serverless-security-best-practices)
 - [Docker Images & Container Security](#docker-images--container-security)
 - [Pod Security Policies](#pod-security-policies)
diff --git a/docs/finops.md b/docs/finops.md
index a67d6723..9c4c1ca1 100644
--- a/docs/finops.md
+++ b/docs/finops.md
@@ -2,7 +2,7 @@
 - [Introduction](#introduction)
 - [Books](#books)
 - [Kubernetes Governance and Cost Management for the Cloud-Native Enterprise](#kubernetes-governance-and-cost-management-for-the-cloud-native-enterprise)
-    - [Replex](#replex)
+	- [Replex](#replex)
 
 ## Introduction
 - [FinOps Foundation: FinOps.org](https://www.finops.org/) Collaborative, Real-Time Cloud Financial Management
diff --git a/docs/git.md b/docs/git.md
index 7a00aee8..1d6ff9d7 100644
--- a/docs/git.md
+++ b/docs/git.md
@@ -3,13 +3,13 @@
 - [Design By Contract](#design-by-contract)
 - [Git Cheat Sheets](#git-cheat-sheets)
 - [Patterns for Managing Source Code Branches (Branching Models/Workflows)](#patterns-for-managing-source-code-branches-branching-modelsworkflows)
-  - [Git Workflows](#git-workflows)
-  - [Trunk Based Development](#trunk-based-development)
-  - [Feature Branch Development (aka GitFlow)](#feature-branch-development-aka-gitflow)
-    - [Git Flow](#git-flow)
-  - [Trunk-based Development vs. Git Flow](#trunk-based-development-vs-git-flow)
-  - [Alternative Branching Models](#alternative-branching-models)
-    - [Feature Flags (Feature Toggles)](#feature-flags-feature-toggles)
+	- [Git Workflows](#git-workflows)
+	- [Trunk Based Development](#trunk-based-development)
+	- [Feature Branch Development (aka GitFlow)](#feature-branch-development-aka-gitflow)
+		- [Git Flow](#git-flow)
+	- [Trunk-based Development vs. Git Flow](#trunk-based-development-vs-git-flow)
+	- [Alternative Branching Models](#alternative-branching-models)
+		- [Feature Flags (Feature Toggles)](#feature-flags-feature-toggles)
 - [Git Commands](#git-commands)
 - [BitBucket](#bitbucket)
 - [GitLab](#gitlab)
@@ -17,16 +17,16 @@
 - [Git Tools](#git-tools)
 - [Azure DevOps (formerly known as VSTS)](#azure-devops-formerly-known-as-vsts)
 - [Merge BOTs](#merge-bots)
-  - [Tips](#tips)
-  - [Jenkins for git merges](#jenkins-for-git-merges)
-  - [Bitbucket for git merges](#bitbucket-for-git-merges)
-  - [GitLab for git merges](#gitlab-for-git-merges)
-    - [Marge GitLab bot](#marge-gitlab-bot)
-  - [Jenkins-X bots](#jenkins-x-bots)
-  - [Plastic SCM bot](#plastic-scm-bot)
-  - [Mergify bot](#mergify-bot)
-  - [GitHub bots](#github-bots)
-    - [Bors GitHub bot](#bors-github-bot)
+	- [Tips](#tips)
+	- [Jenkins for git merges](#jenkins-for-git-merges)
+	- [Bitbucket for git merges](#bitbucket-for-git-merges)
+	- [GitLab for git merges](#gitlab-for-git-merges)
+		- [Marge GitLab bot](#marge-gitlab-bot)
+	- [Jenkins-X bots](#jenkins-x-bots)
+	- [Plastic SCM bot](#plastic-scm-bot)
+	- [Mergify bot](#mergify-bot)
+	- [GitHub bots](#github-bots)
+		- [Bors GitHub bot](#bors-github-bot)
 
 ## Git Distributed Version-Control System
 * [Wikipedia: Git](https://en.wikipedia.org/wiki/Git)
diff --git a/docs/gitops.md b/docs/gitops.md
index 2c2260d6..f649926e 100644
--- a/docs/gitops.md
+++ b/docs/gitops.md
@@ -2,22 +2,22 @@
 - [Introduction](#introduction)
 - [Git Repositories Structures](#git-repositories-structures)
 - [GitOps Tools](#gitops-tools)
-  - [Flux. The GitOps Operator for Kubernetes](#flux-the-gitops-operator-for-kubernetes)
-  - [Kustomize. Kubernetes native configuration management](#kustomize-kubernetes-native-configuration-management)
-  - [Flagger](#flagger)
-  - [WKSctl. Weave Kubernetes System Control](#wksctl-weave-kubernetes-system-control)
-  - [Helm](#helm)
-  - [Jenkins](#jenkins)
-  - [Terraform](#terraform)
-  - [Config Sync and Anthos Config Management](#config-sync-and-anthos-config-management)
-  - [Portworx AutoPilot](#portworx-autopilot)
-  - [OpenShift Applier](#openshift-applier)
+	- [Flux. The GitOps Operator for Kubernetes](#flux-the-gitops-operator-for-kubernetes)
+	- [Kustomize. Kubernetes native configuration management](#kustomize-kubernetes-native-configuration-management)
+	- [Flagger](#flagger)
+	- [WKSctl. Weave Kubernetes System Control](#wksctl-weave-kubernetes-system-control)
+	- [Helm](#helm)
+	- [Jenkins](#jenkins)
+	- [Terraform](#terraform)
+	- [Config Sync and Anthos Config Management](#config-sync-and-anthos-config-management)
+	- [Portworx AutoPilot](#portworx-autopilot)
+	- [OpenShift Applier](#openshift-applier)
 - [GitOps Frameworks](#gitops-frameworks)
 - [Kubernetes Platforms and GitOps](#kubernetes-platforms-and-gitops)
-  - [OpenShift GitOps](#openshift-gitops)
-  - [AWS Kubernetes](#aws-kubernetes)
-  - [Weave Kubernetes Platform](#weave-kubernetes-platform)
-  - [Ubuntu Charmed Kubernetes](#ubuntu-charmed-kubernetes)
+	- [OpenShift GitOps](#openshift-gitops)
+	- [AWS Kubernetes](#aws-kubernetes)
+	- [Weave Kubernetes Platform](#weave-kubernetes-platform)
+	- [Ubuntu Charmed Kubernetes](#ubuntu-charmed-kubernetes)
 
 ## Introduction
 - [gitops.tech](https://www.gitops.tech/)
diff --git a/docs/ibm_cloud.md b/docs/ibm_cloud.md
index e18222eb..af815ea8 100644
--- a/docs/ibm_cloud.md
+++ b/docs/ibm_cloud.md
@@ -2,12 +2,12 @@
 - [IBM Cloud](#ibm-cloud)
 - [IBM API Connect](#ibm-api-connect)
 - [WebSphere Liberty with support of Java Microservices and Cloud Native Apps](#websphere-liberty-with-support-of-java-microservices-and-cloud-native-apps)
-    - [Open Liberty](#open-liberty)
+	- [Open Liberty](#open-liberty)
 - [Red Hat OpenShift on IBM Z and LinuxONE](#red-hat-openshift-on-ibm-z-and-linuxone)
-    - [IBM Storage for Red Hat OpenShift. IBM Spectrum Storage Suite](#ibm-storage-for-red-hat-openshift-ibm-spectrum-storage-suite)
+	- [IBM Storage for Red Hat OpenShift. IBM Spectrum Storage Suite](#ibm-storage-for-red-hat-openshift-ibm-spectrum-storage-suite)
 - [IBM Cloud Paks and OpenShift](#ibm-cloud-paks-and-openshift)
-    - [CloudPaks For Applications (CP4A)](#cloudpaks-for-applications-cp4a)
-    - [IBM Cloud Pak for Multicloud Management (CP4MCM)](#ibm-cloud-pak-for-multicloud-management-cp4mcm)
+	- [CloudPaks For Applications (CP4A)](#cloudpaks-for-applications-cp4a)
+	- [IBM Cloud Pak for Multicloud Management (CP4MCM)](#ibm-cloud-pak-for-multicloud-management-cp4mcm)
 
 <center>
 [![ibm cloud videos](images/ibm_cloud_logo.jpg)](https://www.youtube.com/user/IBMCloud)
diff --git a/docs/java-and-java-performance-optimization.md b/docs/java-and-java-performance-optimization.md
index 58738498..f41697f9 100644
--- a/docs/java-and-java-performance-optimization.md
+++ b/docs/java-and-java-performance-optimization.md
@@ -1,13 +1,13 @@
 # Java and Memory Management
 - [Java Performance Optimization](#java-performance-optimization)
-  - [Benchmarking modern Java Virtual Machines and the next-generation garbage collectors](#benchmarking-modern-java-virtual-machines-and-the-next-generation-garbage-collectors)
-  - [Relevant JVM Metrics](#relevant-jvm-metrics)
-  - [Common JVM Errors](#common-jvm-errors)
-  - [Tuning Jenkins GC](#tuning-jenkins-gc)
-  - [Tuning Java Containers](#tuning-java-containers)
-  - [Debugging java applications on OpenShift and Kubernetes](#debugging-java-applications-on-openshift-and-kubernetes)
+	- [Benchmarking modern Java Virtual Machines and the next-generation garbage collectors](#benchmarking-modern-java-virtual-machines-and-the-next-generation-garbage-collectors)
+	- [Relevant JVM Metrics](#relevant-jvm-metrics)
+	- [Common JVM Errors](#common-jvm-errors)
+	- [Tuning Jenkins GC](#tuning-jenkins-gc)
+	- [Tuning Java Containers](#tuning-java-containers)
+	- [Debugging java applications on OpenShift and Kubernetes](#debugging-java-applications-on-openshift-and-kubernetes)
 - [List of Performance Analysis Tools](#list-of-performance-analysis-tools)
-  - [Threadumps, Heapdumps and GC Analysis Tools](#threadumps-heapdumps-and-gc-analysis-tools)
+	- [Threadumps, Heapdumps and GC Analysis Tools](#threadumps-heapdumps-and-gc-analysis-tools)
 - [Garbage Collection and Heap Offloading](#garbage-collection-and-heap-offloading)
 - [Java Tracing Tools. JDK Flight Recorder](#java-tracing-tools-jdk-flight-recorder)
 - [Cambios importantes en la gestión de memoria de Java 8 de Oracle (2014)](#cambios-importantes-en-la-gestión-de-memoria-de-java-8-de-oracle-2014)
diff --git a/docs/java_frameworks.md b/docs/java_frameworks.md
index c128dcd8..179a5d38 100644
--- a/docs/java_frameworks.md
+++ b/docs/java_frameworks.md
@@ -1,17 +1,17 @@
 # Java and Java Programming Models. Open Source Microservices Frameworks
 - [Java](#java)
-  - [Existing Java Implementations](#existing-java-implementations)
-  - [Use Java 11](#use-java-11)
-  - [Java Collections Interview Questions](#java-collections-interview-questions)
+	- [Existing Java Implementations](#existing-java-implementations)
+	- [Use Java 11](#use-java-11)
+	- [Java Collections Interview Questions](#java-collections-interview-questions)
 - [Java Programming Models (Frameworks)](#java-programming-models-frameworks)
 - [Jakarta EE](#jakarta-ee)
 - [Eclipse MicroProfile](#eclipse-microprofile)
-  - [Server Vendors providing MicroProfile runtimes](#server-vendors-providing-microprofile-runtimes)
+	- [Server Vendors providing MicroProfile runtimes](#server-vendors-providing-microprofile-runtimes)
 - [Spring](#spring)
-  - [Spring Cloud](#spring-cloud)
-  - [SpringBoot](#springboot)
-  - [SpringBoot with Docker](#springboot-with-docker)
-  - [CI/CD for kubernetes with SpringBoot](#cicd-for-kubernetes-with-springboot)
+	- [Spring Cloud](#spring-cloud)
+	- [SpringBoot](#springboot)
+	- [SpringBoot with Docker](#springboot-with-docker)
+	- [CI/CD for kubernetes with SpringBoot](#cicd-for-kubernetes-with-springboot)
 - [Quarkus](#quarkus)
 - [Thorntail (aka WildFly Swarm)](#thorntail-aka-wildfly-swarm)
 - [Spring Boot VS MicroProfile](#spring-boot-vs-microprofile)
diff --git a/docs/jenkins.md b/docs/jenkins.md
index 6dbd66f3..9752991f 100644
--- a/docs/jenkins.md
+++ b/docs/jenkins.md
@@ -7,34 +7,34 @@
 - [Running Jenkins on Java 11. Use OpenJDK 11](#running-jenkins-on-java-11-use-openjdk-11)
 - [Online Learning](#online-learning)
 - [Jenkins Configuration as Code Solutions. 3 available DSLs](#jenkins-configuration-as-code-solutions-3-available-dsls)
-  - [DSL 1. Job DSL Plugin. From Freestyle jobs to Declarative Pipeline](#dsl-1-job-dsl-plugin-from-freestyle-jobs-to-declarative-pipeline)
-  - [DSL 2. Jenkins Pipeline. Pipeline as Code with Jenkins](#dsl-2-jenkins-pipeline-pipeline-as-code-with-jenkins)
-    - [Jenkins Pipeline Syntax. Scripted Syntax (Groovy DSL syntax) VS Declarative Syntax](#jenkins-pipeline-syntax-scripted-syntax-groovy-dsl-syntax-vs-declarative-syntax)
-    - [Extending with Shared Libraries](#extending-with-shared-libraries)
-      - [Automating Service Level Indicators/Service Level Objectives based build validation with Keptn and Jenkins](#automating-service-level-indicatorsservice-level-objectives-based-build-validation-with-keptn-and-jenkins)
-    - [Jenkinsfile Runner. Serverless / function-as-a-service build execution](#jenkinsfile-runner-serverless--function-as-a-service-build-execution)
-  - [DSL 3. Jenkins Configuration as Code (JCasC)](#dsl-3-jenkins-configuration-as-code-jcasc)
-    - [Read-only Jenkins Configuration](#read-only-jenkins-configuration)
+	- [DSL 1. Job DSL Plugin. From Freestyle jobs to Declarative Pipeline](#dsl-1-job-dsl-plugin-from-freestyle-jobs-to-declarative-pipeline)
+	- [DSL 2. Jenkins Pipeline. Pipeline as Code with Jenkins](#dsl-2-jenkins-pipeline-pipeline-as-code-with-jenkins)
+		- [Jenkins Pipeline Syntax. Scripted Syntax (Groovy DSL syntax) VS Declarative Syntax](#jenkins-pipeline-syntax-scripted-syntax-groovy-dsl-syntax-vs-declarative-syntax)
+		- [Extending with Shared Libraries](#extending-with-shared-libraries)
+			- [Automating Service Level Indicators/Service Level Objectives based build validation with Keptn and Jenkins](#automating-service-level-indicatorsservice-level-objectives-based-build-validation-with-keptn-and-jenkins)
+		- [Jenkinsfile Runner. Serverless / function-as-a-service build execution](#jenkinsfile-runner-serverless--function-as-a-service-build-execution)
+	- [DSL 3. Jenkins Configuration as Code (JCasC)](#dsl-3-jenkins-configuration-as-code-jcasc)
+		- [Read-only Jenkins Configuration](#read-only-jenkins-configuration)
 - [Jenkins Architecture. Performance and Scalability](#jenkins-architecture-performance-and-scalability)
 - [Ansible and Jenkins. Running Ansible Playbooks From Jenkins](#ansible-and-jenkins-running-ansible-playbooks-from-jenkins)
 - [Jenkins Tools](#jenkins-tools)
-  - [Plugin Installation Manager Tool](#plugin-installation-manager-tool)
-  - [Pipeline Development Tools](#pipeline-development-tools)
+	- [Plugin Installation Manager Tool](#plugin-installation-manager-tool)
+	- [Pipeline Development Tools](#pipeline-development-tools)
 - [Jenkins Multibranch Pipeline](#jenkins-multibranch-pipeline)
-  - [Multibranch Pipelines with Kubernetes](#multibranch-pipelines-with-kubernetes)
+	- [Multibranch Pipelines with Kubernetes](#multibranch-pipelines-with-kubernetes)
 - [Jenkins Plugins](#jenkins-plugins)
-  - [Selection of Jenkins Plugins](#selection-of-jenkins-plugins)
-  - [Plugin Development. Jenkins Plugin Parent POM 4.0](#plugin-development-jenkins-plugin-parent-pom-40)
-  - [Jenkins Blue Ocean](#jenkins-blue-ocean)
-  - [Cloudbees Flow](#cloudbees-flow)
+	- [Selection of Jenkins Plugins](#selection-of-jenkins-plugins)
+	- [Plugin Development. Jenkins Plugin Parent POM 4.0](#plugin-development-jenkins-plugin-parent-pom-40)
+	- [Jenkins Blue Ocean](#jenkins-blue-ocean)
+	- [Cloudbees Flow](#cloudbees-flow)
 - [Monitoring jenkins](#monitoring-jenkins)
 - [Externalizing Fingerprint Storage for Jenkins](#externalizing-fingerprint-storage-for-jenkins)
 - [Jenkins and Spring Boot](#jenkins-and-spring-boot)
 - [Kubernetes Native Jenkins Operator](#kubernetes-native-jenkins-operator)
 - [CloudBees](#cloudbees)
-  - [CloudBees Rollout and Feature Flags](#cloudbees-rollout-and-feature-flags)
-    - [Feature Flags in CloudBees Enterprise On-Premise](#feature-flags-in-cloudbees-enterprise-on-premise)
-  - [CloudBees Accelerator](#cloudbees-accelerator)
+	- [CloudBees Rollout and Feature Flags](#cloudbees-rollout-and-feature-flags)
+		- [Feature Flags in CloudBees Enterprise On-Premise](#feature-flags-in-cloudbees-enterprise-on-premise)
+	- [CloudBees Accelerator](#cloudbees-accelerator)
 - [Jervis: Jenkins as a service](#jervis-jenkins-as-a-service)
 - [Jenkins X (Serverless)](#jenkins-x-serverless)
 - [Jenkins and SAP](#jenkins-and-sap)
diff --git a/docs/linux.md b/docs/linux.md
index 8b4509b8..ef1b5b22 100644
--- a/docs/linux.md
+++ b/docs/linux.md
@@ -8,13 +8,13 @@
 - [Linux Commands and Tools](#linux-commands-and-tools)
 - [Linux processes](#linux-processes)
 - [Linux and Kubernetes](#linux-and-kubernetes)
-  - [Systemd](#systemd)
-  - [Blogs](#blogs)
-  - [CommandLineFu](#commandlinefu)
-  - [Wait until Your Dockerized Database Is Ready before Continuing](#wait-until-your-dockerized-database-is-ready-before-continuing)
-  - [Copr Build System](#copr-build-system)
-  - [Pulp](#pulp)
-  - [Hashicorp](#hashicorp)
+	- [Systemd](#systemd)
+	- [Blogs](#blogs)
+	- [CommandLineFu](#commandlinefu)
+	- [Wait until Your Dockerized Database Is Ready before Continuing](#wait-until-your-dockerized-database-is-ready-before-continuing)
+	- [Copr Build System](#copr-build-system)
+	- [Pulp](#pulp)
+	- [Hashicorp](#hashicorp)
 - [Linux Libraries](#linux-libraries)
 - [Linux Networking](#linux-networking)
 
diff --git a/docs/maven-gradle.md b/docs/maven-gradle.md
index c700dcab..683ce56a 100644
--- a/docs/maven-gradle.md
+++ b/docs/maven-gradle.md
@@ -1,18 +1,18 @@
 # Maven, Gradle & SDKMAN
 - [Apache Maven](#apache-maven)
-    - [Scaffolding a project with Maven (maven archetype)](#scaffolding-a-project-with-maven-maven-archetype)
-    - [Maven Tests](#maven-tests)
-    - [Dependency Resolution in Maven](#dependency-resolution-in-maven)
-    - [Maven and Docker](#maven-and-docker)
-    - [IDEs](#ides)
-        - [Intellij IDEA](#intellij-idea)
-    - [Maven Plugins](#maven-plugins)
-    - [Maven Cheat Sheets](#maven-cheat-sheets)
-    - [Other Commands](#other-commands)
-    - [Docker Maven Plugin (fabric8)](#docker-maven-plugin-fabric8)
-    - [Fabric8 Maven Plugin](#fabric8-maven-plugin)
+	- [Scaffolding a project with Maven (maven archetype)](#scaffolding-a-project-with-maven-maven-archetype)
+	- [Maven Tests](#maven-tests)
+	- [Dependency Resolution in Maven](#dependency-resolution-in-maven)
+	- [Maven and Docker](#maven-and-docker)
+	- [IDEs](#ides)
+		- [Intellij IDEA](#intellij-idea)
+	- [Maven Plugins](#maven-plugins)
+	- [Maven Cheat Sheets](#maven-cheat-sheets)
+	- [Other Commands](#other-commands)
+	- [Docker Maven Plugin (fabric8)](#docker-maven-plugin-fabric8)
+	- [Fabric8 Maven Plugin](#fabric8-maven-plugin)
 - [Gradle](#gradle)
-    - [Gradle Cheat Sheets](#gradle-cheat-sheets)
+	- [Gradle Cheat Sheets](#gradle-cheat-sheets)
 - [SDKMAN](#sdkman)
 
 ## Apache Maven
diff --git a/docs/message-queue.md b/docs/message-queue.md
index 7b92d2fd..891bbbc4 100644
--- a/docs/message-queue.md
+++ b/docs/message-queue.md
@@ -1,34 +1,34 @@
 # Cloud Based Integration & Messaging. Data Processing & Streaming (aka Data Pipeline). Open Data Hub
 - [Message Queue in Kubernetes. Event-driven Messaging. Real-Time Data Streaming](#message-queue-in-kubernetes-event-driven-messaging-real-time-data-streaming)
 - [Message Brokers](#message-brokers)
-  - [ActiveMQ message broker](#activemq-message-broker)
-  - [RabbitMQ message broker](#rabbitmq-message-broker)
-  - [Redis message broker](#redis-message-broker)
-  - [Apache Camel message broker](#apache-camel-message-broker)
-    - [Apache Camel K](#apache-camel-k)
-  - [KubeMQ message broker](#kubemq-message-broker)
-  - [Google Cloud Platform Pub/Sub](#google-cloud-platform-pubsub)
+	- [ActiveMQ message broker](#activemq-message-broker)
+	- [RabbitMQ message broker](#rabbitmq-message-broker)
+	- [Redis message broker](#redis-message-broker)
+	- [Apache Camel message broker](#apache-camel-message-broker)
+		- [Apache Camel K](#apache-camel-k)
+	- [KubeMQ message broker](#kubemq-message-broker)
+	- [Google Cloud Platform Pub/Sub](#google-cloud-platform-pubsub)
 - [Cloud Based Integration. Integration Platform-as-a-Service (iPaaS) solutions](#cloud-based-integration-integration-platform-as-a-service-ipaas-solutions)
-  - [Red Hat Fuse and Red Hat Fuse Online](#red-hat-fuse-and-red-hat-fuse-online)
-  - [Syndesis open source integration platform](#syndesis-open-source-integration-platform)
+	- [Red Hat Fuse and Red Hat Fuse Online](#red-hat-fuse-and-red-hat-fuse-online)
+	- [Syndesis open source integration platform](#syndesis-open-source-integration-platform)
 - [Debezium open source distributed platform for Change Data Capture (CDC) software design pattern](#debezium-open-source-distributed-platform-for-change-data-capture-cdc-software-design-pattern)
 - [Red Hat Integration service registry and Apicurio](#red-hat-integration-service-registry-and-apicurio)
 - [Data Processing (aka Streaming Data, Data Pipeline or Big Data Pipeline)](#data-processing-aka-streaming-data-data-pipeline-or-big-data-pipeline)
-  - [Apache Kafka](#apache-kafka)
-  - [Banzai Cloud Supertubes (Cloud Native Kafka implementation)](#banzai-cloud-supertubes-cloud-native-kafka-implementation)
-  - [Confluent Cloud (Apache Kafka Re-engineered for the Cloud)](#confluent-cloud-apache-kafka-re-engineered-for-the-cloud)
-  - [Redpanda (kafka alternative). A modern streaming platform for mission critical workloads](#redpanda-kafka-alternative-a-modern-streaming-platform-for-mission-critical-workloads)
-    - [KsqlDB](#ksqldb)
-  - [Apache Pulsar](#apache-pulsar)
-  - [Apache Flink](#apache-flink)
-  - [Hazelcast JET](#hazelcast-jet)
+	- [Apache Kafka](#apache-kafka)
+	- [Banzai Cloud Supertubes (Cloud Native Kafka implementation)](#banzai-cloud-supertubes-cloud-native-kafka-implementation)
+	- [Confluent Cloud (Apache Kafka Re-engineered for the Cloud)](#confluent-cloud-apache-kafka-re-engineered-for-the-cloud)
+	- [Redpanda (kafka alternative). A modern streaming platform for mission critical workloads](#redpanda-kafka-alternative-a-modern-streaming-platform-for-mission-critical-workloads)
+		- [KsqlDB](#ksqldb)
+	- [Apache Pulsar](#apache-pulsar)
+	- [Apache Flink](#apache-flink)
+	- [Hazelcast JET](#hazelcast-jet)
 - [Workflow Engines](#workflow-engines)
 - [Zeebe](#zeebe)
-  - [Apache Airflow](#apache-airflow)
-  - [Couler](#couler)
+	- [Apache Airflow](#apache-airflow)
+	- [Couler](#couler)
 - [Red Hat AMQ (ActiveMQ Artemis broker and Apache Kafka)](#red-hat-amq-activemq-artemis-broker-and-apache-kafka)
-  - [Red Hat AMQ Broker (ActiveMQ Artemis)](#red-hat-amq-broker-activemq-artemis)
-  - [Red Hat AMQ Streams](#red-hat-amq-streams)
+	- [Red Hat AMQ Broker (ActiveMQ Artemis)](#red-hat-amq-broker-activemq-artemis)
+	- [Red Hat AMQ Streams](#red-hat-amq-streams)
 - [Open Data Hub AI-as-a-Service (AIaaS) platform](#open-data-hub-ai-as-a-service-aiaas-platform)
 - [KEDA. Kubernetes Event Driven Autoscaling](#keda-kubernetes-event-driven-autoscaling)
 - [eBooks](#ebooks)
diff --git a/docs/monitoring.md b/docs/monitoring.md
index 11511e75..0953b6da 100644
--- a/docs/monitoring.md
+++ b/docs/monitoring.md
@@ -1,63 +1,63 @@
 # Monitoring and Performance. Prometheus, Grafana, APMs and more
 - [Monitoring](#monitoring)
-  - [Key Performance Indicator (KPI)](#key-performance-indicator-kpi)
+	- [Key Performance Indicator (KPI)](#key-performance-indicator-kpi)
 - [OpenShift Cluster Monitoring Built-in solutions](#openshift-cluster-monitoring-built-in-solutions)
-  - [OpenShift 3.11 Metrics and Logging](#openshift-311-metrics-and-logging)
-    - [Prometheus and Grafana](#prometheus-and-grafana)
-    - [Custom Grafana Dashboard for OpenShift 3.11](#custom-grafana-dashboard-for-openshift-311)
-    - [Capacity Management Grafana Dashboard](#capacity-management-grafana-dashboard)
-    - [Software Delivery Metrics Grafana Dashboard](#software-delivery-metrics-grafana-dashboard)
-    - [Prometheus for OpenShift 3.11](#prometheus-for-openshift-311)
-  - [OpenShift 4](#openshift-4)
+	- [OpenShift 3.11 Metrics and Logging](#openshift-311-metrics-and-logging)
+		- [Prometheus and Grafana](#prometheus-and-grafana)
+		- [Custom Grafana Dashboard for OpenShift 3.11](#custom-grafana-dashboard-for-openshift-311)
+		- [Capacity Management Grafana Dashboard](#capacity-management-grafana-dashboard)
+		- [Software Delivery Metrics Grafana Dashboard](#software-delivery-metrics-grafana-dashboard)
+		- [Prometheus for OpenShift 3.11](#prometheus-for-openshift-311)
+	- [OpenShift 4](#openshift-4)
 - [Prometheus](#prometheus)
-  - [Prometheus Storage](#prometheus-storage)
-    - [Scalability, High Availability (HA) and Long-Term Storage](#scalability-high-availability-ha-and-long-term-storage)
-    - [Storage Solutions for Prometheus](#storage-solutions-for-prometheus)
-      - [InfluxDB & InfluxDB Templates](#influxdb--influxdb-templates)
-  - [Collectors. Software exposing Prometheus metrics](#collectors-software-exposing-prometheus-metrics)
-    - [Prometheus Exporters. Plug-in architecture and extensibility with Prometheus Exporters (collectors)](#prometheus-exporters-plug-in-architecture-and-extensibility-with-prometheus-exporters-collectors)
-    - [Prometheus Exporters Development. Node Exporter](#prometheus-exporters-development-node-exporter)
-    - [Prometheus Third-party Collectors/Exporters](#prometheus-third-party-collectorsexporters)
-      - [OpenTelemetry Collector](#opentelemetry-collector)
-      - [Telegraf Collector](#telegraf-collector)
-      - [Micrometer Collector](#micrometer-collector)
-  - [Prometheus Alarms and Event Tracking](#prometheus-alarms-and-event-tracking)
-  - [Prometheus and Cloud Monitoring](#prometheus-and-cloud-monitoring)
-  - [Prometheus Installers](#prometheus-installers)
-    - [Binaries, source code or Docker](#binaries-source-code-or-docker)
-    - [Ansible Roles](#ansible-roles)
-  - [Prometheus Operator](#prometheus-operator)
-    - [kube Prometheus](#kube-prometheus)
-    - [Prometheus Operator with Helm3](#prometheus-operator-with-helm3)
-    - [Kubernetes Cluster Monitoring Stack based on Prometheus Operator](#kubernetes-cluster-monitoring-stack-based-on-prometheus-operator)
-  - [Prometheus SaaS Solutions](#prometheus-saas-solutions)
+	- [Prometheus Storage](#prometheus-storage)
+		- [Scalability, High Availability (HA) and Long-Term Storage](#scalability-high-availability-ha-and-long-term-storage)
+		- [Storage Solutions for Prometheus](#storage-solutions-for-prometheus)
+			- [InfluxDB & InfluxDB Templates](#influxdb--influxdb-templates)
+	- [Collectors. Software exposing Prometheus metrics](#collectors-software-exposing-prometheus-metrics)
+		- [Prometheus Exporters. Plug-in architecture and extensibility with Prometheus Exporters (collectors)](#prometheus-exporters-plug-in-architecture-and-extensibility-with-prometheus-exporters-collectors)
+		- [Prometheus Exporters Development. Node Exporter](#prometheus-exporters-development-node-exporter)
+		- [Prometheus Third-party Collectors/Exporters](#prometheus-third-party-collectorsexporters)
+			- [OpenTelemetry Collector](#opentelemetry-collector)
+			- [Telegraf Collector](#telegraf-collector)
+			- [Micrometer Collector](#micrometer-collector)
+	- [Prometheus Alarms and Event Tracking](#prometheus-alarms-and-event-tracking)
+	- [Prometheus and Cloud Monitoring](#prometheus-and-cloud-monitoring)
+	- [Prometheus Installers](#prometheus-installers)
+		- [Binaries, source code or Docker](#binaries-source-code-or-docker)
+		- [Ansible Roles](#ansible-roles)
+	- [Prometheus Operator](#prometheus-operator)
+		- [kube Prometheus](#kube-prometheus)
+		- [Prometheus Operator with Helm3](#prometheus-operator-with-helm3)
+		- [Kubernetes Cluster Monitoring Stack based on Prometheus Operator](#kubernetes-cluster-monitoring-stack-based-on-prometheus-operator)
+	- [Prometheus SaaS Solutions](#prometheus-saas-solutions)
 - [Grafana](#grafana)
-  - [Grafana Dashboards](#grafana-dashboards)
-  - [Grafana 7](#grafana-7)
+	- [Grafana Dashboards](#grafana-dashboards)
+	- [Grafana 7](#grafana-7)
 - [Proof of Concept: ActiveMQ Monitoring with Prometheus](#proof-of-concept-activemq-monitoring-with-prometheus)
-  - [PoC: ActiveMQ 5.x Monitoring with Telegraf Collector, Prometheus and Grafana Dashboard 10702](#poc-activemq-5x-monitoring-with-telegraf-collector-prometheus-and-grafana-dashboard-10702)
-    - [Deployment and Configuration](#deployment-and-configuration)
-  - [PoC: ActiveMQ Artemis Monitoring with Prometheus Metrics Plugin (Micrometer Collector) and Prometheus. Grafana Dashboard not available](#poc-activemq-artemis-monitoring-with-prometheus-metrics-plugin-micrometer-collector-and-prometheus-grafana-dashboard-not-available)
-    - [Deployment and Configuration](#deployment-and-configuration-1)
-  - [Validation of Artemis Broker Monitoring with JMeter](#validation-of-artemis-broker-monitoring-with-jmeter)
-    - [JMeter Example Test Plans](#jmeter-example-test-plans)
+	- [PoC: ActiveMQ 5.x Monitoring with Telegraf Collector, Prometheus and Grafana Dashboard 10702](#poc-activemq-5x-monitoring-with-telegraf-collector-prometheus-and-grafana-dashboard-10702)
+		- [Deployment and Configuration](#deployment-and-configuration)
+	- [PoC: ActiveMQ Artemis Monitoring with Prometheus Metrics Plugin (Micrometer Collector) and Prometheus. Grafana Dashboard not available](#poc-activemq-artemis-monitoring-with-prometheus-metrics-plugin-micrometer-collector-and-prometheus-grafana-dashboard-not-available)
+		- [Deployment and Configuration](#deployment-and-configuration-1)
+	- [Validation of Artemis Broker Monitoring with JMeter](#validation-of-artemis-broker-monitoring-with-jmeter)
+		- [JMeter Example Test Plans](#jmeter-example-test-plans)
 - [Kibana](#kibana)
 - [Prometheus and Grafana Interactive Learning](#prometheus-and-grafana-interactive-learning)
 - [Logging & Centralized Log Management](#logging--centralized-log-management)
 - [Performance](#performance)
 - [List of Performance Analysis Tools](#list-of-performance-analysis-tools)
-  - [Thread Dumps. Debugging Java Applications](#thread-dumps-debugging-java-applications)
+	- [Thread Dumps. Debugging Java Applications](#thread-dumps-debugging-java-applications)
 - [Debugging Java Applications on OpenShift and Kubernetes](#debugging-java-applications-on-openshift-and-kubernetes)
 - [Distributed Tracing. OpenTelemetry and Jaeger](#distributed-tracing-opentelemetry-and-jaeger)
-  - [Microservice Observability with Distributed Tracing. OpenTelemetry.io](#microservice-observability-with-distributed-tracing-opentelemetryio)
-  - [Jaeger VS OpenTelemetry. How Jaeger works with OpenTelemetry](#jaeger-vs-opentelemetry-how-jaeger-works-with-opentelemetry)
-  - [Jaeger vs Zipkin](#jaeger-vs-zipkin)
-  - [Grafana Tempo distributed tracing system](#grafana-tempo-distributed-tracing-system)
+	- [Microservice Observability with Distributed Tracing. OpenTelemetry.io](#microservice-observability-with-distributed-tracing-opentelemetryio)
+	- [Jaeger VS OpenTelemetry. How Jaeger works with OpenTelemetry](#jaeger-vs-opentelemetry-how-jaeger-works-with-opentelemetry)
+	- [Jaeger vs Zipkin](#jaeger-vs-zipkin)
+	- [Grafana Tempo distributed tracing system](#grafana-tempo-distributed-tracing-system)
 - [Application Performance Management (APM)](#application-performance-management-apm)
-  - [Elastic APM](#elastic-apm)
-  - [Dynatrace APM](#dynatrace-apm)
+	- [Elastic APM](#elastic-apm)
+	- [Dynatrace APM](#dynatrace-apm)
 - [Message Queue Monitoring](#message-queue-monitoring)
-  - [Red Hat AMQ 7 Broker Monitoring solutions based on Prometheus and Grafana](#red-hat-amq-7-broker-monitoring-solutions-based-on-prometheus-and-grafana)
+	- [Red Hat AMQ 7 Broker Monitoring solutions based on Prometheus and Grafana](#red-hat-amq-7-broker-monitoring-solutions-based-on-prometheus-and-grafana)
 - [Serverless Monitoring](#serverless-monitoring)
 - [Distributed Tracing in Apache Beam](#distributed-tracing-in-apache-beam)
 - [Krossboard Converged Kubernetes usage analytics](#krossboard-converged-kubernetes-usage-analytics)
diff --git a/docs/nexus-jfrog.md b/docs/nexus-jfrog.md
index 17981ef6..37ff32a2 100644
--- a/docs/nexus-jfrog.md
+++ b/docs/nexus-jfrog.md
@@ -1,15 +1,15 @@
 # Nexus & JFrog Artifactory
 - [Nexus Repository Manager (NXRM) 3](#nexus-repository-manager-nxrm-3)
-    - [Getting Started](#getting-started)
-    - [Setup Nexus Kubernetes. Run nexus3 with docker in a kubernetes cluster](#setup-nexus-kubernetes-run-nexus3-with-docker-in-a-kubernetes-cluster)
-    - [Nexus as a Docker repo](#nexus-as-a-docker-repo)
-        - [Secure Docker Registries](#secure-docker-registries)
-    - [SSL/TLS Certificates](#ssltls-certificates)
-        - [Add Insecure Registry to Docker](#add-insecure-registry-to-docker)
-    - [Jenkins Integration with Nexus](#jenkins-integration-with-nexus)
-    - [Nexus 3 Configuration as Code](#nexus-3-configuration-as-code)
-    - [Nexus CLI](#nexus-cli)
-    - [Sonatype Nexus Community](#sonatype-nexus-community)
+	- [Getting Started](#getting-started)
+	- [Setup Nexus Kubernetes. Run nexus3 with docker in a kubernetes cluster](#setup-nexus-kubernetes-run-nexus3-with-docker-in-a-kubernetes-cluster)
+	- [Nexus as a Docker repo](#nexus-as-a-docker-repo)
+		- [Secure Docker Registries](#secure-docker-registries)
+	- [SSL/TLS Certificates](#ssltls-certificates)
+		- [Add Insecure Registry to Docker](#add-insecure-registry-to-docker)
+	- [Jenkins Integration with Nexus](#jenkins-integration-with-nexus)
+	- [Nexus 3 Configuration as Code](#nexus-3-configuration-as-code)
+	- [Nexus CLI](#nexus-cli)
+	- [Sonatype Nexus Community](#sonatype-nexus-community)
 - [JFrog Artifactory](#jfrog-artifactory)
 - [JFrog DevOps Platform](#jfrog-devops-platform)
 
diff --git a/docs/nosql.md b/docs/nosql.md
index d446dc77..0daa7d59 100644
--- a/docs/nosql.md
+++ b/docs/nosql.md
@@ -1,9 +1,9 @@
 # NoSQL Databases and NewSQL
 - [NoSQL](#nosql)
-    - [MongoDB Tools and MongoDB as a Service](#mongodb-tools-and-mongodb-as-a-service)
-    - [Redis](#redis)
-    - [Alternatives](#alternatives)
-    - [Apache Drill. Schema free SQL query on everything engines](#apache-drill-schema-free-sql-query-on-everything-engines)
+	- [MongoDB Tools and MongoDB as a Service](#mongodb-tools-and-mongodb-as-a-service)
+	- [Redis](#redis)
+	- [Alternatives](#alternatives)
+	- [Apache Drill. Schema free SQL query on everything engines](#apache-drill-schema-free-sql-query-on-everything-engines)
 - [NewSQL](#newsql)
 
 ## NoSQL
diff --git a/docs/ocp4.md b/docs/ocp4.md
index d7a0d0f6..97ff4847 100644
--- a/docs/ocp4.md
+++ b/docs/ocp4.md
@@ -1,45 +1,45 @@
 # OCP 4
 - [OpenShift Container Platform 4 (OCP 4)](#openshift-container-platform-4-ocp-4)
-  - [Best Practices](#best-practices)
-  - [Setting up OCP4 on AWS](#setting-up-ocp4-on-aws)
+	- [Best Practices](#best-practices)
+	- [Setting up OCP4 on AWS](#setting-up-ocp4-on-aws)
 - [Downloads](#downloads)
 - [OpenShift End-to-End. Day 0, Day 1 & Day 2](#openshift-end-to-end-day-0-day-1--day-2)
 - [OCP 4 Overview](#ocp-4-overview)
-  - [Three New Functionalities](#three-new-functionalities)
-  - [New Technical Components](#new-technical-components)
-  - [Installation & Cluster Autoscaler](#installation--cluster-autoscaler)
-    - [IPI & UPI](#ipi--upi)
-  - [Cluster Autoscaler Operator](#cluster-autoscaler-operator)
-  - [Operators](#operators)
-    - [Introduction](#introduction)
-    - [Catalog](#catalog)
-    - [Certified Opeators, OLM Operators and Red Hat Operators](#certified-opeators-olm-operators-and-red-hat-operators)
-    - [Deploy and bind enterprise-grade microservices with Kubernetes Operators](#deploy-and-bind-enterprise-grade-microservices-with-kubernetes-operators)
-    - [OpenShift Container Storage Operator (OCS)](#openshift-container-storage-operator-ocs)
-      - [OCS 3 (OpenShift 3)](#ocs-3-openshift-3)
-      - [OCS 4 (OpenShift 4)](#ocs-4-openshift-4)
-    - [Cluster Network Operator (CNO) & Routers](#cluster-network-operator-cno--routers)
-    - [ServiceMesh Operator](#servicemesh-operator)
-    - [Serverless Operator (Knative)](#serverless-operator-knative)
-    - [Crossplane Operator (Universal Control Plane API for Cloud Computing)](#crossplane-operator-universal-control-plane-api-for-cloud-computing)
-  - [Monitoring & Observability](#monitoring--observability)
-    - [Grafana](#grafana)
-    - [Prometheus](#prometheus)
-    - [Alerts & Silences](#alerts--silences)
-    - [Cluster Logging (EFK)](#cluster-logging-efk)
-  - [Build Images. Next-Generation Container Image Building Tools](#build-images-next-generation-container-image-building-tools)
-  - [Registry & Quay](#registry--quay)
-  - [Local Development Environment](#local-development-environment)
+	- [Three New Functionalities](#three-new-functionalities)
+	- [New Technical Components](#new-technical-components)
+	- [Installation & Cluster Autoscaler](#installation--cluster-autoscaler)
+		- [IPI & UPI](#ipi--upi)
+	- [Cluster Autoscaler Operator](#cluster-autoscaler-operator)
+	- [Operators](#operators)
+		- [Introduction](#introduction)
+		- [Catalog](#catalog)
+		- [Certified Opeators, OLM Operators and Red Hat Operators](#certified-opeators-olm-operators-and-red-hat-operators)
+		- [Deploy and bind enterprise-grade microservices with Kubernetes Operators](#deploy-and-bind-enterprise-grade-microservices-with-kubernetes-operators)
+		- [OpenShift Container Storage Operator (OCS)](#openshift-container-storage-operator-ocs)
+			- [OCS 3 (OpenShift 3)](#ocs-3-openshift-3)
+			- [OCS 4 (OpenShift 4)](#ocs-4-openshift-4)
+		- [Cluster Network Operator (CNO) & Routers](#cluster-network-operator-cno--routers)
+		- [ServiceMesh Operator](#servicemesh-operator)
+		- [Serverless Operator (Knative)](#serverless-operator-knative)
+		- [Crossplane Operator (Universal Control Plane API for Cloud Computing)](#crossplane-operator-universal-control-plane-api-for-cloud-computing)
+	- [Monitoring & Observability](#monitoring--observability)
+		- [Grafana](#grafana)
+		- [Prometheus](#prometheus)
+		- [Alerts & Silences](#alerts--silences)
+		- [Cluster Logging (EFK)](#cluster-logging-efk)
+	- [Build Images. Next-Generation Container Image Building Tools](#build-images-next-generation-container-image-building-tools)
+	- [Registry & Quay](#registry--quay)
+	- [Local Development Environment](#local-development-environment)
 - [OpenShift on Azure](#openshift-on-azure)
 - [OpenShift Youtube](#openshift-youtube)
 - [OpenShift 4 Training](#openshift-4-training)
 - [OpenShift 4 Roadmap](#openshift-4-roadmap)
 - [Kubevirt Virtual Machine Management on Kubernetes](#kubevirt-virtual-machine-management-on-kubernetes)
 - [Networking and Network Policy in OCP4. SDN/CNI plug-ins](#networking-and-network-policy-in-ocp4-sdncni-plug-ins)
-  - [Multiple Networks with SDN/CNI plug-ins. Usage scenarios for an additional network](#multiple-networks-with-sdncni-plug-ins-usage-scenarios-for-an-additional-network)
-  - [Istio CNI plug-in](#istio-cni-plug-in)
-  - [Calico CNI Plug-in](#calico-cni-plug-in)
-  - [Third Party Network Operators with OpenShift](#third-party-network-operators-with-openshift)
+	- [Multiple Networks with SDN/CNI plug-ins. Usage scenarios for an additional network](#multiple-networks-with-sdncni-plug-ins-usage-scenarios-for-an-additional-network)
+	- [Istio CNI plug-in](#istio-cni-plug-in)
+	- [Calico CNI Plug-in](#calico-cni-plug-in)
+	- [Third Party Network Operators with OpenShift](#third-party-network-operators-with-openshift)
 - [Storage in OCP 4. OpenShift Container Storage (OCS)](#storage-in-ocp-4-openshift-container-storage-ocs)
 - [Red Hat Advanced Cluster Management for Kubernetes](#red-hat-advanced-cluster-management-for-kubernetes)
 - [OpenShift Kubernetes Engine (OKE)](#openshift-kubernetes-engine-oke)
diff --git a/docs/openshift-pipelines.md b/docs/openshift-pipelines.md
index 42eaa988..5303b41c 100644
--- a/docs/openshift-pipelines.md
+++ b/docs/openshift-pipelines.md
@@ -1,26 +1,26 @@
 # OpenShift Pipelines
 - [Deploying Jenkins on OpenShift](#deploying-jenkins-on-openshift)
-    - [Jenkins Container Images in OpenShift](#jenkins-container-images-in-openshift)
+	- [Jenkins Container Images in OpenShift](#jenkins-container-images-in-openshift)
 - [External Jenkins Integration with OpenShift](#external-jenkins-integration-with-openshift)
 - [Improving Jenkins’ performance on Openshift](#improving-jenkins-performance-on-openshift)
 - [Building applications in OpenShift](#building-applications-in-openshift)
-    - [OpenShift Pipelines with Build Config](#openshift-pipelines-with-build-config)
-    - [OpenShift Pipelines with S2i](#openshift-pipelines-with-s2i)
-        - [OpenShift Pipelines with S2i and Jenkins Blue Ocean. Deploying Blue Ocean on OpenShift](#openshift-pipelines-with-s2i-and-jenkins-blue-ocean-deploying-blue-ocean-on-openshift)
+	- [OpenShift Pipelines with Build Config](#openshift-pipelines-with-build-config)
+	- [OpenShift Pipelines with S2i](#openshift-pipelines-with-s2i)
+		- [OpenShift Pipelines with S2i and Jenkins Blue Ocean. Deploying Blue Ocean on OpenShift](#openshift-pipelines-with-s2i-and-jenkins-blue-ocean-deploying-blue-ocean-on-openshift)
 - [OpenShift Deployments with Deployment Descriptor](#openshift-deployments-with-deployment-descriptor)
 - [OpenShift Deployments with GitHub Actions](#openshift-deployments-with-github-actions)
 - [Deployments with OpenShift HA in Multiple Datacenters](#deployments-with-openshift-ha-in-multiple-datacenters)
 - [ODO - OpenShift Command line for Developers](#odo---openshift-command-line-for-developers)
 - [OpenShift Pipelines](#openshift-pipelines)
-    - [Jenkins CICD Getting started with Groovy and Docker Containers](#jenkins-cicd-getting-started-with-groovy-and-docker-containers)
-    - [Fabric8 Pipeline Library (deprecated)](#fabric8-pipeline-library-deprecated)
-    - [Eclipse Jkube Pipeline Library (formerly known as Fabric8). Kubernetes & OpenShift Maven Plugins](#eclipse-jkube-pipeline-library-formerly-known-as-fabric8-kubernetes--openshift-maven-plugins)
-    - [Jenkins Pipelines with OpenShift 3](#jenkins-pipelines-with-openshift-3)
-    - [OpenShift Jenkins Pipeline (DSL) Plugin. Scripted Syntax (Groovy DSL syntax) VS Declarative Syntax](#openshift-jenkins-pipeline-dsl-plugin-scripted-syntax-groovy-dsl-syntax-vs-declarative-syntax)
-        - [Red Hat Communities of Practice](#red-hat-communities-of-practice)
-        - [Jenkins Pipelines in OpenShift 4](#jenkins-pipelines-in-openshift-4)
-    - [OpenShift Pipelines (aka Tekton CI/CD Pipelines)](#openshift-pipelines-aka-tekton-cicd-pipelines)
-        - [Tekton and Tekton Pipelines](#tekton-and-tekton-pipelines)
+	- [Jenkins CICD Getting started with Groovy and Docker Containers](#jenkins-cicd-getting-started-with-groovy-and-docker-containers)
+	- [Fabric8 Pipeline Library (deprecated)](#fabric8-pipeline-library-deprecated)
+	- [Eclipse Jkube Pipeline Library (formerly known as Fabric8). Kubernetes & OpenShift Maven Plugins](#eclipse-jkube-pipeline-library-formerly-known-as-fabric8-kubernetes--openshift-maven-plugins)
+	- [Jenkins Pipelines with OpenShift 3](#jenkins-pipelines-with-openshift-3)
+	- [OpenShift Jenkins Pipeline (DSL) Plugin. Scripted Syntax (Groovy DSL syntax) VS Declarative Syntax](#openshift-jenkins-pipeline-dsl-plugin-scripted-syntax-groovy-dsl-syntax-vs-declarative-syntax)
+		- [Red Hat Communities of Practice](#red-hat-communities-of-practice)
+		- [Jenkins Pipelines in OpenShift 4](#jenkins-pipelines-in-openshift-4)
+	- [OpenShift Pipelines (aka Tekton CI/CD Pipelines)](#openshift-pipelines-aka-tekton-cicd-pipelines)
+		- [Tekton and Tekton Pipelines](#tekton-and-tekton-pipelines)
 - [Slides](#slides)
 
 ##  Deploying Jenkins on OpenShift
diff --git a/docs/openshift.md b/docs/openshift.md
index ea8e3887..8a3a1f98 100644
--- a/docs/openshift.md
+++ b/docs/openshift.md
@@ -6,30 +6,30 @@
 - [OC CLI Auto Completion](#oc-cli-auto-completion)
 - [Cluster Autoscaler in OpenShift](#cluster-autoscaler-in-openshift)
 - [e-Books](#e-books)
-    - [Kubernetes e-Books](#kubernetes-e-books)
+	- [Kubernetes e-Books](#kubernetes-e-books)
 - [Online Learning](#online-learning)
 - [Local Installers](#local-installers)
 - [Cloud Native Development Architecture. Architectural Diagrams](#cloud-native-development-architecture-architectural-diagrams)
 - [Cluster Installers](#cluster-installers)
-    - [OKD 3](#okd-3)
-    - [OpenShift 3](#openshift-3)
-    - [OpenShift 4](#openshift-4)
-        - [OpenShift 4 deployment on VMWare vSphere](#openshift-4-deployment-on-vmware-vsphere)
-            - [Deploying OpenShift 4.4 to VMware vSphere 7](#deploying-openshift-44-to-vmware-vsphere-7)
+	- [OKD 3](#okd-3)
+	- [OpenShift 3](#openshift-3)
+	- [OpenShift 4](#openshift-4)
+		- [OpenShift 4 deployment on VMWare vSphere](#openshift-4-deployment-on-vmware-vsphere)
+			- [Deploying OpenShift 4.4 to VMware vSphere 7](#deploying-openshift-44-to-vmware-vsphere-7)
 - [Networking (OCP 3 and OCP 4)](#networking-ocp-3-and-ocp-4)
 - [Security](#security)
-    - [How is OpenShift Container Platform Secured?](#how-is-openshift-container-platform-secured)
-    - [Security Context Constraints](#security-context-constraints)
-        - [Review Security Context Constraints](#review-security-context-constraints)
-    - [OpenShift Network Model & Network Policy](#openshift-network-model--network-policy)
-        - [Network Security Zones](#network-security-zones)
-        - [OpenShift Route and OpenShift Ingress](#openshift-route-and-openshift-ingress)
-        - [OpenShift Egress](#openshift-egress)
+	- [How is OpenShift Container Platform Secured?](#how-is-openshift-container-platform-secured)
+	- [Security Context Constraints](#security-context-constraints)
+		- [Review Security Context Constraints](#review-security-context-constraints)
+	- [OpenShift Network Model & Network Policy](#openshift-network-model--network-policy)
+		- [Network Security Zones](#network-security-zones)
+		- [OpenShift Route and OpenShift Ingress](#openshift-route-and-openshift-ingress)
+		- [OpenShift Egress](#openshift-egress)
 - [Openshift Compliant Docker Images](#openshift-compliant-docker-images)
-    - [Gitlab](#gitlab)
-    - [Atlassian Confluence6](#atlassian-confluence6)
-    - [Sonatype Nexus 3](#sonatype-nexus-3)
-    - [Rocket Chat](#rocket-chat)
+	- [Gitlab](#gitlab)
+	- [Atlassian Confluence6](#atlassian-confluence6)
+	- [Sonatype Nexus 3](#sonatype-nexus-3)
+	- [Rocket Chat](#rocket-chat)
 - [IBM Cloud Paks and OpenShift](#ibm-cloud-paks-and-openshift)
 - [OpenShift on AWS](#openshift-on-aws)
 - [OpenShift Dedicated](#openshift-dedicated)
diff --git a/docs/other-awesome-lists.md b/docs/other-awesome-lists.md
index 4687da58..1c356dd2 100644
--- a/docs/other-awesome-lists.md
+++ b/docs/other-awesome-lists.md
@@ -2,23 +2,23 @@
 - [Inspired By](#inspired-by)
 - [Other Awesome Kubernetes Lists](#other-awesome-kubernetes-lists)
 - [Other Awesome Lists](#other-awesome-lists)
-    - [Project Management](#project-management)
-    - [SysAdmin](#sysadmin)
-    - [Cloud Native](#cloud-native)
-    - [CI/CD and Pipelines](#cicd-and-pipelines)
-    - [DevOps](#devops)
-    - [OpenShift](#openshift)
-    - [Microservices](#microservices)
-    - [Monitoring](#monitoring)
-    - [Cloud](#cloud)
-    - [Docker](#docker)
-    - [Configuration Management](#configuration-management)
-    - [Security](#security)
-    - [QA](#qa)
-    - [API](#api)
-    - [Development](#development)
-        - [Bash](#bash)
-    - [Data Processing](#data-processing)
+	- [Project Management](#project-management)
+	- [SysAdmin](#sysadmin)
+	- [Cloud Native](#cloud-native)
+	- [CI/CD and Pipelines](#cicd-and-pipelines)
+	- [DevOps](#devops)
+	- [OpenShift](#openshift)
+	- [Microservices](#microservices)
+	- [Monitoring](#monitoring)
+	- [Cloud](#cloud)
+	- [Docker](#docker)
+	- [Configuration Management](#configuration-management)
+	- [Security](#security)
+	- [QA](#qa)
+	- [API](#api)
+	- [Development](#development)
+		- [Bash](#bash)
+	- [Data Processing](#data-processing)
 - [Open Source Alternatives](#open-source-alternatives)
 - [Kubectl Plugins](#kubectl-plugins)
 
diff --git a/docs/performance-testing-with-jenkins-and-jmeter.md b/docs/performance-testing-with-jenkins-and-jmeter.md
index 19b5c6b8..906cbd2e 100644
--- a/docs/performance-testing-with-jenkins-and-jmeter.md
+++ b/docs/performance-testing-with-jenkins-and-jmeter.md
@@ -4,8 +4,8 @@
 - [JMeter based Cloud solutions](#jmeter-based-cloud-solutions)
 - [Jenkins & JMeter](#jenkins--jmeter)
 - [Gatling](#gatling)
-  - [API Load Testing](#api-load-testing)
-  - [Gatling and Maven](#gatling-and-maven)
+	- [API Load Testing](#api-load-testing)
+	- [Gatling and Maven](#gatling-and-maven)
 - [Jenkins & Gatling](#jenkins--gatling)
 - [Alternatives](#alternatives)
 
diff --git a/docs/project-management-methodology.md b/docs/project-management-methodology.md
index bc616e3c..2c1e7501 100644
--- a/docs/project-management-methodology.md
+++ b/docs/project-management-methodology.md
@@ -1,9 +1,9 @@
 # Project Management Methodology
 - [Project Management Methodology](#project-management-methodology)
-  - [Team Topologies](#team-topologies)
-  - [Agile vs Scrum vs Waterfall vs Kanban vs Lean](#agile-vs-scrum-vs-waterfall-vs-kanban-vs-lean)
-  - [Waterfall vs Agile](#waterfall-vs-agile)
-  - [Agile vs Scrum vs Kanban](#agile-vs-scrum-vs-kanban)
+	- [Team Topologies](#team-topologies)
+	- [Agile vs Scrum vs Waterfall vs Kanban vs Lean](#agile-vs-scrum-vs-waterfall-vs-kanban-vs-lean)
+	- [Waterfall vs Agile](#waterfall-vs-agile)
+	- [Agile vs Scrum vs Kanban](#agile-vs-scrum-vs-kanban)
 - [Responsibility Assignment Matrix (RACI)](#responsibility-assignment-matrix-raci)
 
 ## Project Management Methodology
diff --git a/docs/python.md b/docs/python.md
index 4628d12f..c5d17324 100644
--- a/docs/python.md
+++ b/docs/python.md
@@ -1,6 +1,4 @@
 # Python
-<!-- MarkdownTOC -->
-
 - [Python Blogs and Forums](#python-blogs-and-forums)
 - [Python docs](#python-docs)
 - [Python Books](#python-books)
@@ -18,8 +16,6 @@
 - [Jython](#jython)
 - [Eclipse IDE](#eclipse-ide)
 
-<!-- /MarkdownTOC -->
-
 ## Python Blogs and Forums
 - [digitalocean.com python 🌟](https://www.digitalocean.com/community/tags/python)
 - [Learn Python 'subreddit'](https://www.reddit.com/r/learnpython)
diff --git a/docs/rancher.md b/docs/rancher.md
index f24e3fe9..e994af53 100644
--- a/docs/rancher.md
+++ b/docs/rancher.md
@@ -2,13 +2,13 @@
 - [Rancher: Enterprise management for Kubernetes](#rancher-enterprise-management-for-kubernetes)
 - [Rancher Academy (online training)](#rancher-academy-online-training)
 - [Rancher 2](#rancher-2)
-  - [Rancher Networking and CNI Providers](#rancher-networking-and-cni-providers)
-  - [Rancher 2 RKE](#rancher-2-rke)
+	- [Rancher Networking and CNI Providers](#rancher-networking-and-cni-providers)
+	- [Rancher 2 RKE](#rancher-2-rke)
 - [K3S](#k3s)
-  - [K3S Use Cases](#k3s-use-cases)
-  - [K3S in Public Clouds](#k3s-in-public-clouds)
-  - [K3D](#k3d)
-  - [K3OS](#k3os)
+	- [K3S Use Cases](#k3s-use-cases)
+	- [K3S in Public Clouds](#k3s-in-public-clouds)
+	- [K3D](#k3d)
+	- [K3OS](#k3os)
 - [K3C](#k3c)
 - [Hosted Rancher](#hosted-rancher)
 - [Rancher on Microsoft Azure](#rancher-on-microsoft-azure)
diff --git a/docs/scaffolding.md b/docs/scaffolding.md
index f5f9241a..385f4686 100644
--- a/docs/scaffolding.md
+++ b/docs/scaffolding.md
@@ -2,8 +2,8 @@
 - [Scaffold Definition](#scaffold-definition)
 - [Nodejs Scaffolding with Yeoman](#nodejs-scaffolding-with-yeoman)
 - [Java Scaffolding](#java-scaffolding)
-  - [Java Scaffolding with Spring Roo](#java-scaffolding-with-spring-roo)
-  - [Java Scaffolding with Maven](#java-scaffolding-with-maven)
+	- [Java Scaffolding with Spring Roo](#java-scaffolding-with-spring-roo)
+	- [Java Scaffolding with Maven](#java-scaffolding-with-maven)
 - [Kubernetes Scaffolding](#kubernetes-scaffolding)
 
 ## Scaffold Definition 
diff --git a/docs/serverless.md b/docs/serverless.md
index 8b044eda..024e1cd2 100644
--- a/docs/serverless.md
+++ b/docs/serverless.md
@@ -1,14 +1,14 @@
 # Serverless Architectures and Frameworks
 - [Serverless Architectures](#serverless-architectures)
-  - [FaaS: Function as a Service](#faas-function-as-a-service)
-  - [Serverless Ecosystems Comparison](#serverless-ecosystems-comparison)
+	- [FaaS: Function as a Service](#faas-function-as-a-service)
+	- [Serverless Ecosystems Comparison](#serverless-ecosystems-comparison)
 - [Serverless Framework (the most popular serverless ecosystem)](#serverless-framework-the-most-popular-serverless-ecosystem)
 - [Orchestrators of Functions on Kubernetes (aka Kubernetes Native Serverless Frameworks or FaaS Providers)](#orchestrators-of-functions-on-kubernetes-aka-kubernetes-native-serverless-frameworks-or-faas-providers)
-  - [OpenFaaS](#openfaas)
-  - [Knative](#knative)
-    - [OpenShift Serverless with Knative](#openshift-serverless-with-knative)
-  - [Kubeless](#kubeless)
-  - [OpenWhisk](#openwhisk)
+	- [OpenFaaS](#openfaas)
+	- [Knative](#knative)
+		- [OpenShift Serverless with Knative](#openshift-serverless-with-knative)
+	- [Kubeless](#kubeless)
+	- [OpenWhisk](#openwhisk)
 - [Popular Deployment Frameworks for AWS Lambda](#popular-deployment-frameworks-for-aws-lambda)
 
 ## Serverless Architectures
diff --git a/docs/servicemesh.md b/docs/servicemesh.md
index eca21d9c..2fdbbce8 100644
--- a/docs/servicemesh.md
+++ b/docs/servicemesh.md
@@ -2,13 +2,13 @@
 - [Introduction](#introduction)
 - [Tools For Evaluating Service Meshes](#tools-for-evaluating-service-meshes)
 - [Consul Service Mesh](#consul-service-mesh)
-  - [Consul Connect](#consul-connect)
+	- [Consul Connect](#consul-connect)
 - [Linkerd Service Mesh](#linkerd-service-mesh)
 - [Maesh Service Mesh](#maesh-service-mesh)
 - [Traffic Director (Google's Service Mesh)](#traffic-director-googles-service-mesh)
-  - [Google L7 Internal Load Balancer](#google-l7-internal-load-balancer)
+	- [Google L7 Internal Load Balancer](#google-l7-internal-load-balancer)
 - [Envoy Proxy Service Mesh](#envoy-proxy-service-mesh)
-  - [xDS protocol (Envoy's Discovery Service Protocol)](#xds-protocol-envoys-discovery-service-protocol)
+	- [xDS protocol (Envoy's Discovery Service Protocol)](#xds-protocol-envoys-discovery-service-protocol)
 - [Istio - Service Mesh](#istio---service-mesh)
 - [Open Service Mesh](#open-service-mesh)
 - [Kourier](#kourier)
diff --git a/docs/sonarqube.md b/docs/sonarqube.md
index ebc7a9dd..b01481c4 100644
--- a/docs/sonarqube.md
+++ b/docs/sonarqube.md
@@ -3,7 +3,7 @@
 - [Analyzing Code with SonarQube](#analyzing-code-with-sonarqube)
 - [Integrations](#integrations)
 - [SonarQube on Kubernetes](#sonarqube-on-kubernetes)
-    - [GCP Kubernetes](#gcp-kubernetes)
+	- [GCP Kubernetes](#gcp-kubernetes)
 - [SonarQube Scanners](#sonarqube-scanners)
 
 ## Introduction
diff --git a/docs/storage.md b/docs/storage.md
index 6136cb7d..564fcf0e 100644
--- a/docs/storage.md
+++ b/docs/storage.md
@@ -1,18 +1,18 @@
 # Cloud Native Storage
 - [Introduction](#introduction)
 - [Solutions](#solutions)
-  - [Rook](#rook)
-  - [Robin](#robin)
-  - [Reduxio](#reduxio)
-  - [Portworx](#portworx)
-  - [StorageOS](#storageos)
-  - [OpenEBS](#openebs)
-  - [LightOS](#lightos)
-  - [Longhorn](#longhorn)
-  - [IBM Spectrum Storage Suite](#ibm-spectrum-storage-suite)
+	- [Rook](#rook)
+	- [Robin](#robin)
+	- [Reduxio](#reduxio)
+	- [Portworx](#portworx)
+	- [StorageOS](#storageos)
+	- [OpenEBS](#openebs)
+	- [LightOS](#lightos)
+	- [Longhorn](#longhorn)
+	- [IBM Spectrum Storage Suite](#ibm-spectrum-storage-suite)
 - [OpenShift Container Storage Operator (OCS)](#openshift-container-storage-operator-ocs)
-  - [OCS 3 (OpenShift 3)](#ocs-3-openshift-3)
-  - [OCS 4 (OpenShift 4)](#ocs-4-openshift-4)
+	- [OCS 3 (OpenShift 3)](#ocs-3-openshift-3)
+	- [OCS 4 (OpenShift 4)](#ocs-4-openshift-4)
 
 ## Introduction
 - [thenewstack.io: A Guide to Running Stateful Applications in Kubernetes](https://thenewstack.io/a-guide-to-running-stateful-applications-in-kubernetes/)
diff --git a/docs/terraform.md b/docs/terraform.md
index 3595dba4..d4813f73 100644
--- a/docs/terraform.md
+++ b/docs/terraform.md
@@ -1,14 +1,14 @@
 # Hashicorp Packer & Terraform 
 - [Packer](#packer)
 - [Terraform](#terraform)
-  - [Terraform Infracost](#terraform-infracost)
-  - [Awesome Terraform](#awesome-terraform)
-  - [Terraform Cheat Sheets](#terraform-cheat-sheets)
-  - [Best Practices](#best-practices)
-  - [Terraform and CI/CD](#terraform-and-cicd)
-  - [OpenShift and Terraform](#openshift-and-terraform)
-  - [Terraform Kubernetes Operator](#terraform-kubernetes-operator)
-  - [Terraform and AWS](#terraform-and-aws)
+	- [Terraform Infracost](#terraform-infracost)
+	- [Awesome Terraform](#awesome-terraform)
+	- [Terraform Cheat Sheets](#terraform-cheat-sheets)
+	- [Best Practices](#best-practices)
+	- [Terraform and CI/CD](#terraform-and-cicd)
+	- [OpenShift and Terraform](#openshift-and-terraform)
+	- [Terraform Kubernetes Operator](#terraform-kubernetes-operator)
+	- [Terraform and AWS](#terraform-and-aws)
 - [Gruntwork](#gruntwork)
 - [Terraform Modules](#terraform-modules)
 - [Enforce Policy with Sentinel](#enforce-policy-with-sentinel)
diff --git a/docs/testops.md b/docs/testops.md
index 91339e2d..f0d68ae6 100644
--- a/docs/testops.md
+++ b/docs/testops.md
@@ -3,7 +3,7 @@
 - [Continuous Testing in DevOps](#continuous-testing-in-devops)
 - [Test Driven Development (TDD)](#test-driven-development-tdd)
 - [Tools](#tools)
-  - [KubeAudit](#kubeaudit)
+	- [KubeAudit](#kubeaudit)
 
 ## TestOps
 - [devops.com: Shift-Right Testing: The Emergence of TestOps](https://devops.com/shift-right-testing-the-emergence-of-testops/)
diff --git a/docs/visual-studio.md b/docs/visual-studio.md
index 99fb7f5f..702d4002 100644
--- a/docs/visual-studio.md
+++ b/docs/visual-studio.md
@@ -1,16 +1,16 @@
 # Visual Studio Code
 - [VSCode](#vscode)
-  - [Updates](#updates)
+	- [Updates](#updates)
 - [Visual Studio MarketPlace and Extensions](#visual-studio-marketplace-and-extensions)
-  - [Publishers](#publishers)
-  - [Extensions](#extensions)
-    - [More Extensions](#more-extensions)
-    - [More Extensions (Blogs)](#more-extensions-blogs)
-    - [Themes](#themes)
-    - [DevOps Extensions](#devops-extensions)
-    - [Azure DevOps Extensions](#azure-devops-extensions)
-    - [Git Flow Extensions](#git-flow-extensions)
-    - [Jenkins Extensions](#jenkins-extensions)
+	- [Publishers](#publishers)
+	- [Extensions](#extensions)
+		- [More Extensions](#more-extensions)
+		- [More Extensions (Blogs)](#more-extensions-blogs)
+		- [Themes](#themes)
+		- [DevOps Extensions](#devops-extensions)
+		- [Azure DevOps Extensions](#azure-devops-extensions)
+		- [Git Flow Extensions](#git-flow-extensions)
+		- [Jenkins Extensions](#jenkins-extensions)
 - [Integrated Terminal on Visual Studio Code](#integrated-terminal-on-visual-studio-code)
 - [Test Debugging](#test-debugging)
 - [Python in Visual Studio Code](#python-in-visual-studio-code)
diff --git a/docs/web-servers.md b/docs/web-servers.md
index af29d1ae..59d449b9 100644
--- a/docs/web-servers.md
+++ b/docs/web-servers.md
@@ -1,7 +1,7 @@
 # Web Servers & Reverse Proxies: Apache, Nginx, HAProxy, Traefik and more
 - [Introduction](#introduction)
 - [Apache](#apache)
-    - [Apache Configuration Samples](#apache-configuration-samples)
+	- [Apache Configuration Samples](#apache-configuration-samples)
 - [Nginx](#nginx)
 - [HAProxy (HTTP router and reverse proxy)](#haproxy-http-router-and-reverse-proxy)
 - [Traefik (HTTP router and reverse proxy)](#traefik-http-router-and-reverse-proxy)
diff --git a/docs/yaml.md b/docs/yaml.md
index 4641bf7d..e5e1086f 100644
--- a/docs/yaml.md
+++ b/docs/yaml.md
@@ -1,7 +1,7 @@
 # Templating YAML with YAML Processors. Static Checking of Kubernetes YAML Files
 - [Templating YAML Files](#templating-yaml-files)
-  - [YAML Processors](#yaml-processors)
-  - [Helm and Kustomize](#helm-and-kustomize)
+	- [YAML Processors](#yaml-processors)
+	- [Helm and Kustomize](#helm-and-kustomize)
 - [Templating JSON Files](#templating-json-files)
 - [Static Checking of Kubernetes YAML Files](#static-checking-of-kubernetes-yaml-files)