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:
 - sentiment-classification
 paperswithcode_id: null
+pretty_name: polemo2
 ---
 
 # Dataset Card for [Dataset Name]
@@ -128,7 +129,7 @@ Note that the test set doesn't have targets so -1 is used instead
 
 ### Other Known Limitations
 
-[More Information Needed]
+Dataset provided for research purposes only. Please check dataset license for additional information.
 
 ## Additional Information
 
@@ -146,4 +147,4 @@ CC BY-NC-SA 4.0
 
 ### Contributions
 
-Thanks to [@abecadel](https://github.com/abecadel) for adding this dataset.
+Thanks to [@abecadel](https://github.com/abecadel) for adding this dataset.