Update files from the datasets library (from 1.5.0)

Release notes: https://github.com/huggingface/datasets/releases/tag/1.5.0

README.md

@@ -14,9 +14,9 @@ size_categories:
 source_datasets:
 - original
 task_categories:
-- text_classification
+- text-classification
 task_ids:
-- text_classification-other-news-category-classification
+- text-classification-other-news-category-classification
 ---
 
 # Dataset Card for TTC4900: A Benchmark Data for Turkish Text Categorization