Update files from the datasets library (from 1.6.1)

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

igbo_ner.py

@@ -97,7 +97,7 @@ class IgboNer(datasets.GeneratorBasedBuilder):
         ]
 
     def _generate_examples(self, filepath, split):
-        """ Yields examples. """
+        """Yields examples."""
         dictionary = {}
         with open(filepath, "r", encoding="utf-8-sig") as f:
             if self.config.name == "ner_data":