Update Set-MailUser.md

Author: chrisda

exchange/exchange-ps/exchange/Set-MailUser.md

@@ -1571,7 +1571,7 @@ This parameter is available only in the cloud-based service.
 
 The ExcludeFromAllOrgHolds switch specifies whether to exclude the soft-deleted mail user from all organization-wide Microsoft 365 retention policies. You don't need to specify a value with this switch.
 
-Use one of the following values to uniquely identify the soft-deleted mail user:
+When you use this switch, use one of the following values to uniquely identify the soft-deleted mail user in the Identity parameter:
 
 - DistinguishedName
 - Guid