Merge pull request MicrosoftDocs#7237 from Systems-Liam/patch-2

Update Get-CsUserPolicyAssignment.md

Author: Kateyanne

teams/teams-ps/teams/Get-CsUserPolicyAssignment.md

@@ -91,6 +91,8 @@ d8ebfa45-0f28-4d2d-9bcc-b158a49e2d17 TeamsMeetingPolicy AllOn      1    10/29/20
 ### -Identity
 The identify of the user whose policy assignments will be returned.
 
+The -Identity parameter can be in the form of the users ObjectID (taken from Azure AD) or in the form of the UPN ([email protected])
+
 ```yaml
 Type: String
 Parameter Sets: Get