✏️ Fix typo in fastapi/routing.py (#10520)

Fix: https://github.com/tiangolo/fastapi/discussions/10493

fastapi/routing.py

@@ -4328,7 +4328,7 @@ class APIRouter(routing.Router):
         app = FastAPI()
         router = APIRouter()
 
-        @router.put("/items/{item_id}")
+        @router.trace("/items/{item_id}")
         def trace_item(item_id: str):
             return None