Update files from the datasets library (from 1.18.0)

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

README.md

@@ -25,6 +25,7 @@ task_categories:
 task_ids:
 - closed-domain-qa
 paperswithcode_id: null
+pretty_name: CovidQaUcsd
 ---
 
 # Dataset Card for [Dataset Name]
@@ -188,4 +189,4 @@ There are no data splits on the original data
 
 ### Contributions
 
-Thanks to [@vrindaprabhu](https://github.com/vrindaprabhu) for adding this dataset.
+Thanks to [@vrindaprabhu](https://github.com/vrindaprabhu) for adding this dataset.