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

- Librarian Bot: Add language metadata for dataset (8efc353cbf04065291318674304c55016175d5c5)


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

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- cs
 license: mit
 dataset_info:
   features: