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

- Librarian Bot: Add language metadata for dataset (18e47ce6c6a4cc596635bc4213a86b69ff96b93c)


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

README.md

@@ -1,2 +1,6 @@
+---
+language:
+- en
+---
 Total tokens in matching entries: 7595043
 Average tokens per entry: 379.75