The Perfect Tool That I've Found to Document The Project

I will be short and straight to the point, you should try MkDocs powered by python.

MkDocs is a fast, simple and downright gorgeous static site generator that's geared towards building project documentation. Documentation source files are written in Markdown, and configured with a single YAML configuration file.

I found it incredible for documenting a project the are many theme available to choose from like readthedocs, it's also includes search input to easy find what you're looking for in the project documentations.

it worth a try here is the documentation link https://www.mkdocs.org/