Update files from the datasets library (from 1.18.0)

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

README.md

@@ -21,6 +21,7 @@ task_ids:
 - text-classification-other-rationale-extraction
 - text-classification-other-legal-judgment-prediction
 paperswithcode_id: ecthr
+pretty_name: European Court of Human Rights Cases
 ---
 
 # Dataset Card for the ECtHR cases dataset