Update files from the datasets library (from 1.18.0)

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

README.md

@@ -35,6 +35,7 @@ task_categories:
 task_ids:
 - language-modeling
 paperswithcode_id: null
+pretty_name: Igbo Monolingual Dataset
 ---
 
 # Dataset Card for Igbo Monolingual Dataset
@@ -198,4 +199,4 @@ primaryClass={cs.CL}
 
 ### Contributions
 
-Thanks to [@purvimisal](https://github.com/purvimisal) for adding this dataset.
+Thanks to [@purvimisal](https://github.com/purvimisal) for adding this dataset.