fixing event name

Author: ashwinder

articles/communication-services/concepts/call-automation/call-automation.md

@@ -153,7 +153,7 @@ The Call Automation events are sent to the web hook callback URI specified when
 | `CallConnected` | The call successfully started (when using `Answer` or `Create` action) or your application successfully connected to an ongoing call (when using `Connect` action). |
 | `CallDisconnected` | Your application has been disconnected from the call. |
 | `CreateCallFailed` | Your application has failed to create the call. |
-| `AnswerCallFailed` | Your application has failed to answer the call. |
+| `AnswerFailed` | Your application has failed to answer the call. |
 | `ConnectFailed` | Your application failed to connect to a call (for `Connect` call action only). |
 | `CallTransferAccepted` | Transfer action successfully completed and the transferee is connected to the target participant. |
 | `CallTransferFailed` | The transfer action failed. |