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

- Librarian Bot: Add language metadata for dataset (2736152249949d698010614f9aa6ee831ff63942)


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

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 size_categories: n<1K
 tags:
 - rlfh