fix test case

Author: burak-58

src/test/js/webrtc_adaptor.test.js

@@ -2138,7 +2138,7 @@ describe("WebRTCAdaptor", function() {
 
 					var playParameters;			
 
-					playParameters.playStreamId = streamId;
+					playParameters.streamId = streamId;
 					playParameters.playToken = token;
 					playParameters.playRoomId = roomId;
 					playParameters.playEnableTracks = enableTracks;