Update app.py

app.py

@@ -2902,7 +2902,7 @@ async def simple_chat_stream(chat_req: ChatRequest, request: Request):
             "X-Accel-Buffering": "no",
         }
     )
-    # =====================================================
+# =====================================================
 # BACKGROUND CLEANUP TASK
 # =====================================================
 async def cleanup_task():