Librarian Bot: Update dataset YAML metadata for model

This is a pull request to add a dataset, [`nakayama/DeDeDeDataset`](https://huggingface.co/datasets/nakayama/DeDeDeDataset), 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 +1,10 @@
 ---
-language:
-  -en
+language: -en
 license: other
 tags:
-  - stable-diffusion
-  - text-to-image
+- stable-diffusion
+- text-to-image
+datasets: nakayama/DeDeDeDataset
 ---
 # ご利用の際は下記のライセンス内容を十分にご確認ください。
 If you can read English, please refer [here](https://huggingface.co/nakayama/DeDeDe/blob/main/README-en.md).