Update files from the datasets library (from 1.6.1)

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

paws-x.py

@@ -156,7 +156,7 @@ class PAWSX(datasets.GeneratorBasedBuilder):
         ]
 
     def _generate_examples(self, filepath, split):
-        """ Yields examples. """
+        """Yields examples."""
 
         with open(filepath, encoding="utf-8") as f:
             data = csv.DictReader(f, delimiter="\t", quoting=csv.QUOTE_NONE)