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

- Librarian Bot: Add language metadata for dataset (4defc9f11a860958143160de44b3312eed3d17f1)


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

README.md

@@ -1,3 +1,7 @@
 ---
+language:
+- nl
+- fr
+- en
 license: cc-by-nc-sa-4.0
 ---