Update Get-CsHybridPSTNAppliance.md

Author: dariomws

skype/skype-ps/skype/Get-CsHybridPSTNAppliance.md

@@ -93,7 +93,7 @@ Accept wildcard characters: False
 ```
 
 ### -LocalStore
-Retrieves the hybrid PSTN appliances from the local replica of the Central Management store, rather than the Central Management store itself.
+This parameter is reserved for internal Microsoft use
 
 ```yaml
 Type: SwitchParameter