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

- Librarian Bot: Add language metadata for dataset (bef40d25455a5bbbf3f818631f0060bb200e402e)


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

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 dataset_info:
 - config_name: eli5
   features: