Librarian Bot: Add language metadata for dataset (#1)

- Librarian Bot: Add language metadata for dataset (023fd039a95c8c6f4a01fb171aec95ec5a6bedfb)


Co-authored-by: Librarian Bot (Bot) <librarian-bot@users.noreply.huggingface.co>

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 dataset_info:
   features:
   - name: prompt