Update CallingServer SDK changelog for Public release.

sdk/communication/Azure.Communication.CallingServer/CHANGELOG.md

@@ -1,19 +1,20 @@
 # Release History
 
-## 1.0.0-beta.1 (Unreleased)
+## 1.0.0-beta.1 (2021-06-24)
 This is the first release of Azure Communication Service Calling Server. For more information, please see the [README][read_me].
 
 This is a Public Preview version, so breaking changes are possible in subsequent releases as we improve the product. To provide feedback, please submit an issue in our [Azure SDK for .NET GitHub repo](https://github.com/Azure/azure-sdk-for-net/issues).
 
 ### Features Added
-- Create outbound call to an Azure Communication Service User or a phone number.
+- Create outbound call to an Azure Communication Service user or a phone number.
 - Hangup and delete the existing call.
 - Play audio in the call.
-- Outbound apis for Call Recording including start, pause, resume and stop.
+- Out-call apis for call recording including start, pause, resume stop and get state.
 - Subscribe to and receive [DTMF][DTMF] tones via events.
-- Invite and remove participants from the call.
+- Add and remove participants from the call.
+- Recording download apis.
 
 <!-- LINKS -->
-[read_me]: https://github.com/Azure/azure-sdk-for-net/blob/a20e269162fa88a43e5ba0e5bb28f2e76c74a484/sdk/communication/Azure.Communication.CallingServer/README.md
+[read_me]: https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/communication/Azure.Communication.CallingServer/README.md
 [DTMF]: https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling