Update files from the datasets library (from 1.6.1)

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

isizulu_ner_corpus.py

@@ -56,7 +56,7 @@ class IsizuluNerCorpusConfig(datasets.BuilderConfig):
 
 
 class IsizuluNerCorpus(datasets.GeneratorBasedBuilder):
-    """ Isizulu Ner dataset"""
+    """Isizulu Ner dataset"""
 
     BUILDER_CONFIGS = [
         IsizuluNerCorpusConfig(