Tiny typo

Added an "s"

Author: greiginsydney

skype/skype-ps/skype/New-CsImConfiguration.md

@@ -49,7 +49,7 @@ Accept wildcard characters: False
 ```
 
 ### -EnableOfflineIm
-Enables or disable Offline Instant Messaging.
+Enables or disables Offline Instant Messaging.
 
 ```yaml
 Type: Boolean