Update route_intent function documentation for clarity on JSON response format

app.py

@@ -398,7 +398,7 @@ def route_intent(user_input: str, chat_id: str, sender: str):
         "- send_text(message)\n\n"
         "Return only raw JSON matching one of these shapes. For example:\n"
         "  {\"action\":\"generate_image\",\"prompt\":\"a red fox\",\"count\":3,\"width\":512,\"height\":512}\n"
-        "Otherwise, use send_text to reply with plain chat.\n"
+        "Otherwise, use send_text to reply with plain chat and you should only return one json for the current messege not for previoes conversations.\n"
     )
     prompt = f"{sys_prompt}\nConversation so far:\n{history_text}\n\n current message: User: {user_input}"