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

- Librarian Bot: Add language metadata for dataset (6593c654f02f924ad647e3b78d43b94cc53fc8eb)


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

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 license:
 - cc-by-sa-3.0
 - gfdl