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

- Librarian Bot: Add language metadata for dataset (28f2f5cd8ac785e7c15c02b1c7db3bb754914479)


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

README.md

@@ -1,3 +1,5 @@
 ---
+language:
+- en
 license: apache-2.0
 ---