Update Set-CsMediaConfiguration.md

change made per CI 52191
https://vstf-us-wa-28.partners.extranet.microsoft.com:8443/tfs/ContentIdea/ContentIdea/_workitems?_a=edit&id=52191&triage=true

Author: przlplx

skype/skype-ps/skype/Set-CsMediaConfiguration.md

@@ -98,6 +98,7 @@ Accept wildcard characters: False
 
 ### -EnableQoS
 QoS monitors the quality of voice signals over a network.
+The EnableIncallQoS attribute enables or disables the ability of Skype for Business clients to send the raw data that's required to generate IncallQuality messages.
 
 
 ```yaml