CONTRIBUTING.md

Please read the [Development - Overview](https://open-llm-vtuber.github.io/docs/development-guide/overview) before contributing.

If the site is down (like after a thousand years), refer to the [source repo of our documentation site](https://github.com/Open-LLM-VTuber/open-llm-vtuber.github.io/blob/main/docs/development-guide/overview.md)