Update files from the datasets library (from 1.18.0)

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

README.md

@@ -33,6 +33,7 @@ task_categories:
 task_ids:
 - machine-translation
 paperswithcode_id: null
+pretty_name: OpusBooks
 ---
 
 # Dataset Card Creation Guide
@@ -160,4 +161,4 @@ Here are some examples of questions and facts:
 
 ### Contributions
 
-Thanks to [@abhishekkrthakur](https://github.com/abhishekkrthakur) for adding this dataset.
+Thanks to [@abhishekkrthakur](https://github.com/abhishekkrthakur) for adding this dataset.