[datadog] Update README (#9416)

* [datadog] Update README

Signed-off-by: Pierre <mfpierre@gmail.com>

* [datadog] bump chart version

Signed-off-by: Pierre <mfpierre@gmail.com>

stable/datadog/Chart.yaml

@@ -1,5 +1,5 @@
 name: datadog
-version: 1.10.2
+version: 1.10.3
 appVersion: 6.6.0
 description: DataDog Agent
 keywords:

stable/datadog/README.md

@@ -15,15 +15,15 @@ Kubernetes 1.4+ or OpenShift 3.4+ (1.3 support is currently partial, full suppor
 To install the chart with the release name `my-release`, retrieve your Datadog API key from your [Agent Installation Instructions](https://app.datadoghq.com/account/settings#agent/kubernetes) and run:
 
 ```bash
-$ helm install --name my-release \
-    --set datadog.apiKey=YOUR-KEY-HERE stable/datadog
+helm install --name my-release \
+  --set datadog.apiKey=YOUR-KEY-HERE stable/datadog
 ```
 
 After a few minutes, you should see hosts and metrics being reported in Datadog.
 
 **Tip**: List all releases using `helm list`
 
-### Enabling the Datadog Cluster Agent ###
+### Enabling the Datadog Cluster Agent
 
 Read about the Datadog Cluster Agent in the [official documentation](https://docs.datadoghq.com/agent/kubernetes/cluster/).
 
@@ -47,7 +47,7 @@ helm install --name datadog-monitoring \
 To uninstall/delete the `my-release` deployment:
 
 ```bash
-$ helm delete my-release
+helm delete my-release
 ```
 
 The command removes all the Kubernetes components associated with the chart and deletes the release.
@@ -120,15 +120,15 @@ The following table lists the configurable parameters of the Datadog chart and t
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
 
 ```bash
-$ helm install --name my-release \
-    --set datadog.apiKey=YOUR-KEY-HERE,datadog.logLevel=DEBUG \
-    stable/datadog
+helm install --name my-release \
+  --set datadog.apiKey=YOUR-KEY-HERE,datadog.logLevel=DEBUG \
+  stable/datadog
 ```
 
 Alternatively, a YAML file that specifies the values for the parameters can be provided while installing the chart. For example,
 
 ```bash
-$ helm install --name my-release -f my-values.yaml stable/datadog
+helm install --name my-release -f my-values.yaml stable/datadog
 ```
 
 **Tip**: You can copy and customize the default [values.yaml](values.yaml)
@@ -213,6 +213,6 @@ podLabelsAsTags:
 As of the version 6.6.0, the Datadog Agent supports collecting metrics from any container runtime interface used in your cluster.
 Configure the location path of the socket with `datadog.criSocketPath` and make sure you allow the socket to be mounted into the pod running the agent by setting `datadog.useCriSocketVolume` to `True`.
 Standard paths are:
-- Docker socket: `/var/run/docker.sock`
+
 - Containerd socket: `/var/run/containerd/containerd.sock`
 - Cri-o socket: `/var/run/crio/crio.sock`