Update files from the datasets library (from 1.6.1)

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

oclar.py

@@ -88,7 +88,7 @@ class Oclar(datasets.GeneratorBasedBuilder):
         ]
 
     def _generate_examples(self, filepath, split):
-        """ Yields examples. """
+        """Yields examples."""
         with open(filepath, encoding="utf-8") as csv_file:
             csv_reader = csv.reader(csv_file, delimiter=",", skipinitialspace=True)
             next(csv_reader, None)  # skipping headers