I've made a few documentation-like sites over the years, and the one I made a few months ago with Docusaurus 2.0 was by far the one I'm happiest with. Super easy to get started, a very clean look, and easy to customize without being a frontend wizard.
I don't have a horse in this race other than I want to see better documentation out in the wild. I've recommend this to a few people now, and I wouldn't choose anything else.
