Updated help to list all features (#48875)

* Updated help to list all features

just to avoid searching powershell syntax Get-WindowsFeature

+label: docsite_pr

* added Linebreak

added Linebreak

* removed trailing whitespace

removed trailing whitespace

* slight modification of text

lib/ansible/modules/windows/win_feature.py

@@ -25,6 +25,7 @@ options:
   name:
     description:
       - Names of roles or features to install as a single feature or a comma-separated list of features.
+      - To list all available features use the PowerShell command C(Get-WindowsFeature).
     required: yes
     type: list
   state: