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

- Librarian Bot: Add language metadata for dataset (b68e897f5499f0621e0125e7426a82d5d74d10d3)


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

README.md

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