Update Register-PSResourceRepository.md - Example 4

Provide a little more information around example 4. From my reading here it wasn't clear anywhere that the secret must be stored as a PSCredential object and expected Find-PSResource to use the name of the secret and the value of the secret as username/password. This wasn't the case.

Author: robinmalik

powershell-gallery/powershellget-3.x/Microsoft.PowerShell.PSResourceGet/Register-PSResourceRepository.md

@@ -115,9 +115,10 @@ PSGv3     https://www.powershellgallery.com/api/v3 True    50
 ### Example 4
 
 This example registers a repository with credential information to be retrieved from a registered
-**SecretManagement** vault. You must have the **Microsoft.PowerShell.SecretManagement** module
-installed and have a registered vault containing the stored secret. The format of the secret must
-match the requirements of the repository.
+**SecretManagement** vault, where `SecretStore` is the name of the vault and `TestSecret` is the name of the stored secret.
+You must have the **Microsoft.PowerShell.SecretManagement** module installed, have a registered vault, and stored a secret within it.
+If setup correctly, the command `Get-SecretInfo -Name 'TestSecret'` would return the secret.
+Note: The format of the secret must match the requirements of the repository. In some instances, `TestSecret` might need storing as a PSCredential object with a username and password/token. In others it may need storing as a SecureString representing just the token.
 
 ```powershell
 $parameters = @{