Update main.py

main.py

@@ -21,7 +21,7 @@ line_handler = WebhookHandler("7b9984bbc5c62445a79b95b15e34b727")
 def root():
     return {"title": "Echo Bot"}
      
-@app.post("/callback")
+@app.post("/webhook")
 async def callback(
     request: Request,
 ):