Update files from the datasets library (from 1.18.0)

Release notes: https://github.com/huggingface/datasets/releases/tag/1.18.0

README.md

@@ -19,6 +19,7 @@ task_categories:
 task_ids:
 - language-modeling
 paperswithcode_id: wikitext-tl-39
+pretty_name: WikiText-TL-39
 ---
 
 # Dataset Card for WikiText-TL-39
@@ -151,4 +152,4 @@ Tagalog Wikipedia
 
 ### Contributions
 
-Thanks to [@jcblaisecruz02](https://github.com/jcblaisecruz02) for adding this dataset.
+Thanks to [@jcblaisecruz02](https://github.com/jcblaisecruz02) for adding this dataset.