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

- Librarian Bot: Add language metadata for dataset (05fa8146f1e498434cc2cda56cd1cf6afed48358)


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

README.md

@@ -1,3 +1,7 @@
+---
+language:
+- en
+---
 Total tokens in matching entries: 1_392_312_785
 
 Average tokens per entry: 1392.31