add callend

Author: farhanhussainleo

articles/communication-services/resources/troubleshooting/voice-video-calling/troubleshooting-codes.md

@@ -16,7 +16,7 @@ zone_pivot_groups: acs-calling-automation-pstn
 
 This article describes troubleshooting call end response codes for Calling SDK, Call Automation, and PSTN calling.
 
-::: zone pivot="calling,automation,pstn,chat"
+::: zone pivot="calling,callend,automation,pstn,chat"
 
 ## Troubleshooting tips