Fix Serve typo (#12524)

python/ray/serve/long_poll.py

@@ -65,7 +65,7 @@ class LongPollerAsyncClient:
         while True:
             updates: Dict[str, UpdatedObject] = await self._poll_once()
             self._update(updates)
-            logger.debug(f"LongPollerClient received udpates: {updates}")
+            logger.debug(f"LongPollerClient received updates: {updates}")
             for key, updated_object in updates.items():
                 # NOTE(simon): This blocks the loop from doing another poll.
                 # Consider use loop.create_task here or poll first then call