Update call-automation.md

Author: dbasantes

articles/communication-services/concepts/voice-video-calling/call-automation.md

@@ -114,6 +114,7 @@ Most of the events sent by Event Grid are platform agnostic meaning they're emit
 | CallEnded         | A call is terminated and all participants are removed |
 | ParticipantAdded  | A participant has been added to a call |
 | ParticipantRemoved| A participant has been removed from a call |
+| RecordingFileStatusUpdated| A recording file is available |
 
 ### Call Automation webhook events