Librarian Bot: Update dataset YAML metadata for model

This is a pull request to add a dataset, [`Den4ikAI/mailruQA-big`](https://huggingface.co/datasets/Den4ikAI/mailruQA-big), to the metadata for your model (defined in the `YAML` block of your model's `README.md`).
The pull request was made by [librarian-bot](https://huggingface.co/librarian-bot) and used a combination of rules and/or machine learning to suggest this additional metadata.
If this suggestion is incorrect, feel free to close this pull request.

Librarian Bot was made by [@davanstrien](https://huggingface.co/davanstrien); feel free to get in touch with feedback.

README.md

@@ -1,10 +1,9 @@
 ---
 license: mit
+datasets: Den4ikAI/mailruQA-big
 widget:
-    
-    - text: "Q: Что такое любовь?\n A:"
-      example_title: "test"
-
+- text: "Q: Что такое любовь?\n A:"
+  example_title: test
 ---
 Здесь будут выкладываться чекпоинты модели rugpt3-medium обученной на данных с otvet.mail.ru