Merge pull request #41875 from nekomatata/webrtc-doc-turn-server

Fix TURN server example in WebRTC documentation

modules/webrtc/doc_classes/WebRTCPeerConnection.xml

@@ -97,7 +97,7 @@
 				        {
 				            "urls": [ "turn:turn.example.com:3478" ], # One or more TURN servers.
 				            "username": "a_username", # Optional username for the TURN server.
-				            "credentials": "a_password", # Optional password for the TURN server.
+				            "credential": "a_password", # Optional password for the TURN server.
 				        }
 				    ]
 				}