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

Co-authored-by: JohanFreelancer9 <[email protected]>

Author: isrumnon

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

@@ -122,7 +122,7 @@ 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)
+- `SfBOnPremUser` - to query for users that are hosted on-premises (available from January 31, 2023, in the latest TPM versions at that time).
 - `Unknown` - to query for a user type that is not known.