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

- Librarian Bot: Add language metadata for dataset (d60eca66cb8029dd1e081a7a12d80525af6a5656)


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

README.md

@@ -1,3 +1,5 @@
 ---
+language:
+- vi
 license: apache-2.0
 ---