Update files from the datasets library (from 1.18.0)

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

README.md

@@ -18,6 +18,7 @@ task_categories:
 task_ids:
 - summarization
 paperswithcode_id: null
+pretty_name: XSum Hallucination Annotations
 ---
 
 # Dataset Card for XSum Hallucination Annotations
@@ -215,4 +216,4 @@ There is only a single split for both the Faithfulness annotations dataset and F
 
 ### Contributions
 
-Thanks to [@vineeths96](https://github.com/vineeths96) for adding this dataset.
+Thanks to [@vineeths96](https://github.com/vineeths96) for adding this dataset.