Update app.py

app.py

@@ -222,7 +222,7 @@ async def handler(websocket):
     elif "watch" in event:
         # Spectator watches an existing game.
         await watch(websocket, event["watch"])
-    elif "cmd" in event:
+    elif "command" in event:
         
         await execute_command(websocket, event["project_name"], event["command"])
     else: