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

- Librarian Bot: Add language metadata for dataset (e122ffc60c6a34320eaafd5ec671bf72848db9dd)


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

README.md

@@ -1,3 +1,5 @@
 ---
+language:
+- en
 license: creativeml-openrail-m
 ---