Update files from the datasets library (from 1.6.1)

Release notes: https://github.com/huggingface/datasets/releases/tag/1.6.1

metooma.py

@@ -93,7 +93,7 @@ class Metooma(datasets.GeneratorBasedBuilder):
         ]
 
     def _generate_examples(self, filepath):
-        """ Yields examples. """
+        """Yields examples."""
         with open(filepath, encoding="utf-8") as csv_file:
             csv_reader = csv.reader(
                 csv_file,