Librarian Bot: Add language metadata for dataset (#15)

- Librarian Bot: Add language metadata for dataset (f89ff0730553798e836f83c61c67351327d3f94a)


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

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 license: odc-by
 dataset_info:
 - config_name: CC-MAIN-2013-20