infra: using ruff formatter (#594)

Signed-off-by: Aaron <29749331+aarnphm@users.noreply.github.com>

openllm-python/src/openllm/client.py

@@ -1,23 +1,27 @@
-'''OpenLLM Python client.
+"""OpenLLM Python client.
 
 ```python
 client = openllm.client.HTTPClient("http://localhost:8080")
 client.query("What is the difference between gather and scatter?")
 ```
-'''
+"""
+
 from __future__ import annotations
 import typing as t
 
 import openllm_client
 
+
 if t.TYPE_CHECKING:
   from openllm_client import AsyncHTTPClient as AsyncHTTPClient
   from openllm_client import HTTPClient as HTTPClient
   # from openllm_client import AsyncGrpcClient as AsyncGrpcClient
   # from openllm_client import GrpcClient as GrpcClient
 
+
 def __dir__() -> t.Sequence[str]:
   return sorted(dir(openllm_client))
 
+
 def __getattr__(it: str) -> t.Any:
   return getattr(openllm_client, it)