I like to be able to access my documentation offline via Zeal, so I created a docset for sveltekit.
The feed for it is at
https://github.com/yanick/sveltekit-docset/releases/download/v0.0.1/svelte-kit.tgz
You should be able to get at it by
feeding this url to Zeal: dash-feed://https%3A%2F%2Fgithub.com%2Fyanick%2Fsveltekit-docset%2Freleases%2Fdownload%2Fv0.0.1%2Fsvelte-kit.tgz
For Dash, you have to provide the link to the main xml file.