feat(ark e2e): fix lint

Change-Id: I87fd0745e31e8a1dfe3b023a698e48d03c4f04b5

Author: liuhuiqi.7

volcenginesdkarkruntime/_client.py

@@ -282,8 +282,8 @@ def _load_api_key(self, ep: str, duration_seconds: int,
 
         return resp.api_key, resp.expired_time
 
-class E2ECertificateManager(object):
 
+class E2ECertificateManager(object):
 
     def __init__(self, ak: str, sk: str, region: str):
         self._certificate_manager: Dict[str, key_agreement_client] = {}