Librarian Bot: Add language metadata for dataset (#2)

- Librarian Bot: Add language metadata for dataset (72a9caa5ca6507ef6511379d99ffd655355d9990)


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

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 dataset_info:
 - config_name: 2wikimqa
   features: