[stable/drupal] Adapt docs to Helm 3 (#20682)

Signed-off-by: Carlos Rodriguez Hernandez <crhernandez@bitnami.com>

stable/drupal/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: drupal
-version: 6.2.4
+version: 6.2.5
 appVersion: 8.8.2
 description: One of the most versatile open source content management systems.
 keywords:

stable/drupal/README.md

@@ -5,7 +5,7 @@
 ## TL;DR;
 
 ```console
-$ helm install stable/drupal
+$ helm install my-release stable/drupal
 ```
 
 ## Introduction
@@ -28,7 +28,7 @@ Bitnami charts can be used with [Kubeapps](https://kubeapps.com/) for deployment
 To install the chart with the release name `my-release`:
 
 ```console
-$ helm install --name my-release stable/drupal
+$ helm install my-release stable/drupal
 ```
 
 The command deploys Drupal on the Kubernetes cluster in the default configuration. The [Parameters](#parameters) section lists the parameters that can be configured during installation.
@@ -116,7 +116,7 @@ The above parameters map to the env variables defined in [bitnami/drupal](http:/
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
 
 ```console
-$ helm install --name my-release \
+$ helm install my-release \
   --set drupalUsername=admin,drupalPassword=password,mariadb.mariadbRootPassword=secretpassword \
     stable/drupal
 ```
@@ -126,7 +126,7 @@ The above command sets the Drupal administrator account username and password to
 Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,
 
 ```console
-$ helm install --name my-release -f values.yaml stable/drupal
+$ helm install my-release -f values.yaml stable/drupal
 ```
 
 > **Tip**: You can use the default [values.yaml](values.yaml)
@@ -171,7 +171,7 @@ See the [Parameters](#parameters) section to configure the PVC or to disable per
 1. Install the chart
 
 ```bash
-$ helm install --name my-release --set persistence.drupal.existingClaim=PVC_NAME stable/drupal
+$ helm install my-release --set persistence.drupal.existingClaim=PVC_NAME stable/drupal
 ```
 
 ### Host path
@@ -187,7 +187,7 @@ $ helm install --name my-release --set persistence.drupal.existingClaim=PVC_NAME
 1. Install the chart
 
     ```bash
-    $ helm install --name my-release --set persistence.drupal.hostPath=/PATH/TO/HOST/MOUNT stable/drupal
+    $ helm install my-release --set persistence.drupal.hostPath=/PATH/TO/HOST/MOUNT stable/drupal
     ```
 
     This will mount the `drupal-data` volume into the `hostPath` directory. The site data will be persisted if the mount path contains valid data, else the site data will be initialized at first launch.