I'm really not a fan of that docs website/static page generator - or maybe it's the way the content has been laid out - it shouldn't take so many clicks and full screen refreshes to get basic information that could each be a heading on a single page so you can grep for words, use the mouse less etc....
I think they have split it into far too many small pages, the whole CLI section should be one page, if not the whole lot.
Slight aside though, they have used the Material theme for MKDocs, which is much more than a theme, it's a whole extension package of bells a whistles for MKDocs. I'm not actually too keen on "Material for MKDocs" [0], I like all the clever plugins, but the theme itself I find distracting and too "loud". The theme jumps out more than the content itself.
In the Python ecosystem Material for MKDocs seems to be the leading default at the moment, however I much prefer Furo for Sphinx, it's much cleaner, it's about putting the content front and centre. It does also have a similar set of plugins for Sphinx adding those bells and whistles.
Author of Material for MkDocs here. I totally understand that some people don't like Material Design, as it's just everywhere nowadays and can be considered a bit overused. However, with little effort, you can adjust the style of Material for MkDocs with a few lines of additional CSS [0] and fit it to your taste. For example, several days ago I did this [1] in 20min. Nevertheless, Furo is an awesome theme if you like to use Sphinx over MkDocs!