Librarian Bot: Add language metadata for dataset (#3)

- Librarian Bot: Add language metadata for dataset (46041db72bdcc5e26799380cf9f868e88e6f680d)


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

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 license: apache-2.0
 task_categories:
 - text-generation