Fix E266 flake8 warning (x90).

examples/run_xnli.py

@@ -377,7 +377,7 @@ def load_and_cache_examples(args, task, tokenizer, evaluate=False):
 def main():
     parser = argparse.ArgumentParser()
 
-    ## Required parameters
+    # Required parameters
     parser.add_argument(
         "--data_dir",
         default=None,
@@ -417,7 +417,7 @@ def main():
         help="The output directory where the model predictions and checkpoints will be written.",
     )
 
-    ## Other parameters
+    # Other parameters
     parser.add_argument(
         "--config_name", default="", type=str, help="Pretrained config name or path if not the same as model_name"
     )