fix ruff

Signed-off-by: MengqingCao <cmq0113@163.com>

Author: MengqingCao

tests/multicard/test_offline_inference_distributed.py

@@ -23,9 +23,9 @@
 import os
 from unittest.mock import patch
 
+import pytest
 import vllm  # noqa: F401
 from vllm import SamplingParams
-import pytest
 
 from tests.conftest import VllmRunner
 from tests.model_utils import check_outputs_equal