Fix formatting

Author: aravind-segu

tests/test_model_serving_auth.py

@@ -153,8 +153,8 @@ def authenticate():
         try:
             cfg = Config(credentials_strategy=ModelServingUserCredentials())
             headers = cfg.authenticate()
-            assert (cfg.host == 'x')
-            assert headers.get("Authorization") == f'Bearer databricks_invokers_token_v2'
+            assert cfg.host == "x"
+            assert headers.get("Authorization") == f"Bearer databricks_invokers_token_v2"
             successful_authentication_event.set()
         except Exception:
             successful_authentication_event.clear()