Update Get-CsOnlineUser.md

Author: isrumnon

skype/skype-ps/skype/Get-CsOnlineUser.md

@@ -122,8 +122,10 @@ This parameter is added to Get-CsOnlineUser starting from TPM 4.5.1 to indicate
 - `User` - to query for user accounts.
 - `ResourceAccount` - to query for app endpoints or resource accounts.
 - `Guest` - to query for guest accounts.
+- `SfBOnPremUser` - to query for users that are hosted on-premisis. (available starting January 31st 2023 in the latest TPM versions at that time)
 - `Unknown` - to query for a user type that is not known.
 
+
 ```yaml
 Type: UserIdParameter
 Parameter Sets: (All)