fix format

Author: cheng-tan

src/magentic_ui/eval/benchmarks/webvoyager/webvoyager.py

@@ -79,7 +79,9 @@ def __init__(
         if eval_method not in ["exact_match", "gpt_eval"]:
             raise ValueError("eval_method must be 'exact_match' or 'gpt_eval'")
         self.eval_method = eval_method
-        self.eval_client_config: Dict[str, Any] = eval_client_config or self.DEFAULT_EVAL_CONFIG
+        self.eval_client_config: Dict[str, Any] = (
+            eval_client_config or self.DEFAULT_EVAL_CONFIG
+        )
         assert self.data_dir is not None
         self.data_file = os.path.join(self.data_dir, "WebVoyager_data.jsonl")
         self.reference_file = os.path.join(self.data_dir, "reference_answer.json")