Librarian Bot: Update dataset YAML metadata for model

This is a pull request to add a dataset, [`marshmellow77/pics_rio`](https://huggingface.co/datasets/marshmellow77/pics_rio), 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

@@ -8,6 +8,7 @@ tags:
 - diffusion-models-class
 - dreambooth-hackathon
 - animal
+datasets: marshmellow77/pics_rio
 widget:
 - text: rio cat - superman, hyperrealism, no blur, 4 k resolution, ultra detailed,
     style of ivan shishkin, thomas kinkad, zdzisław beksinski