Update calling-chat.md

Author: tomkau

articles/communication-services/concepts/interop/calling-chat.md

@@ -51,6 +51,7 @@ const call = callAgent.startCall([teamsCallee]);
 [Communication Services voice and video calling events](../../../event-grid/communication-services-voice-video-events.md) are raised for calls between a Communication Services user and Teams users.
 
 **Limitations and known issues**
+- This functionality is not currently available in the .NET Calling SDK.
 - Teams users must be in "TeamsOnly" mode. Skype for Business users can't receive 1:1 calls from Communication Services users.
 - Escalation to a group call isn't supported.
 - Communication Services call recording isn't available for 1:1 calls.
@@ -90,4 +91,4 @@ While in private preview, a Communication Services user can do various actions u
 ## Privacy
 Interoperability between Azure Communication Services and Microsoft Teams enables your applications and users to participate in Teams calls, meetings, and chat. It is your responsibility to ensure that the users of your application are notified when recording or transcription are enabled in a Teams call or meeting.
 
-Microsoft will indicate to you via the Azure Communication Services API that recording or transcription has commenced and you must communicate this fact in real time to your users within your application's user interface. You agree to indemnify Microsoft for all costs and damages incurred as a result of your failure to comply with this obligation.
+Microsoft will indicate to you via the Azure Communication Services API that recording or transcription has commenced and you must communicate this fact in real time to your users within your application's user interface. You agree to indemnify Microsoft for all costs and damages incurred as a result of your failure to comply with this obligation.