Librarian Bot: Update dataset YAML metadata for model

This is a pull request to add a dataset, [`silver/lccc`](https://huggingface.co/datasets/silver/lccc), 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

@@ -1,7 +1,8 @@
 ---
+license: mit
 tags:
 - conversational
-license: mit
+datasets: silver/lccc
 ---
 
 ## Chinese pre-trained dialogue model (CDial-GPT)