Small improvement to the way the powershell code lines render in win_say module (html rendering only, still does not break lines properly in ansible-doc) (#25624)

lib/ansible/modules/windows/win_say.py

@@ -72,11 +72,17 @@ options:
 author: "Jon Hawkesworth (@jhawkesworth)"
 notes:
    - Needs speakers or headphones to do anything useful.
-   - To find which voices are installed, run the following powershell
+   - |
+     To find which voices are installed, run the following powershell commands.
+
                  Add-Type -AssemblyName System.Speech
+
                  $speech = New-Object -TypeName System.Speech.Synthesis.SpeechSynthesizer
+
                  $speech.GetInstalledVoices() | ForEach-Object { $_.VoiceInfo }
+
                  $speech.Dispose()
+
    - Speech can be surprisingly slow, so its best to keep message text short.
 '''