Docs support content table. just like `markdown-it-toc-done-right `

### Clear and concise description of the problem

Docs support content table. just like `markdown-it-toc-done-right `

### Suggested solution

use `markdown-it-toc-done-right `.i think it is a good idea.

### Alternative

_No response_

### Additional context

_No response_

### Validations

- [X] Follow our [Code of Conduct](https://github.com/histoire-dev/histoire/blob/main/CODE_OF_CONDUCT.md)
- [X] Read the [Contributing Guidelines](https://github.com/histoire-dev/histoire/blob/main/CONTRIBUTING.md).
- [X] Read the [docs](https://histoire.dev/guide/).
- [X] Check that there isn't [already an issue](https://github.com/histoire-dev/histoire/issues) that requests the same feature to avoid creating a duplicate.

Review the repository's documentation setup and the proposed markdown-it-toc-done-right package first; the issue names no specific file or test. Done means the documentation renders a content table consistently, with the result confirmed in the documentation preview.

Written by the indexing model from the issue text.