Update Set-CsTeamsAppSetupPolicy.md

Update doc to include calling extensions

Author: mathioli

teams/teams-ps/teams/Set-CsTeamsAppSetupPolicy.md

@@ -227,6 +227,21 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
+### -PinnedCallingBarApps
+Pinning an app displays the app in the call window in Teams client.
+
+```yaml
+Type: Microsoft.Teams.Policy.Administration.Cmdlets.Core.PinnedCallingBarApp[]
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
 ### -AppPresetList
 Choose which apps and messaging extensions you want to be installed in your users' personal Teams environment and in meetings they create. Users can install other available apps from the Teams app store.