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

- Librarian Bot: Add language metadata for dataset (bac2c1d0dc8ca35123e6e1c7a202d55b70470d8a)


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

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 license: cc-by-4.0
 configs:
 - config_name: default