Fix E266 flake8 warning (x90).

examples/run_ner.py

@@ -385,7 +385,7 @@ def load_and_cache_examples(args, tokenizer, labels, pad_token_label_id, mode):
 def main():
     parser = argparse.ArgumentParser()
 
-    ## Required parameters
+    # Required parameters
     parser.add_argument(
         "--data_dir",
         default=None,
@@ -415,7 +415,7 @@ def main():
         help="The output directory where the model predictions and checkpoints will be written.",
     )
 
-    ## Other parameters
+    # Other parameters
     parser.add_argument(
         "--labels",
         default="",