Librarian Bot: Add language metadata for dataset (#1)

- Librarian Bot: Add language metadata for dataset (e2dbb0110e4af3cc9de10df344e37bdeabe5f929)


Co-authored-by: Librarian Bot (Bot) <librarian-bot@users.noreply.huggingface.co>

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- de
 dataset_info:
   config_name: all
   features: