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

- Librarian Bot: Add language metadata for dataset (40e26a3a03301dcd5274d3ad001a640fd2483b82)


Co-authored-by: Librarian Bot (Bot) <[email protected]>

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 dataset_info:
   features:
   - name: sentence