lint issue fix

Author: AjitPadhi-Microsoft

src/backend/app_kernel.py

@@ -1073,4 +1073,4 @@ async def get_agent_tools():
 if __name__ == "__main__":
     import uvicorn
 
-    uvicorn.run("app_kernel:app", host="127.0.0.1", port=8000, reload=True)
+    uvicorn.run("app_kernel:app", host="127.0.0.1", port=8000, reload=True)