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

- Librarian Bot: Add language metadata for dataset (879ed8ea02ee560c3e0e8fdcdf9d1f765baa89cd)


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

README.md

@@ -1,3 +1,5 @@
 ---
+language:
+- en
 license: mit
 ---