In interest of keeping with elementary's beautiful documentation, I ported the stylesheets over to SASS and made a Pandoc template. The result looks something like this:
However the upstream stylesheet says the file is copyright elementary LLC, while the site's official LICENSE.md states everything is available under MIT. Since there is no "All rights reserved" marker, and the MIT license is still technically a copyright, it seems legal to release/use this.
Would it be considered in the spirit of elementary OS to release documentation templates suitable for other developers' workflows in their own eOS applications, or are developers intended to use their own styles (and only sourcing GUI designs from the provided HIG and font styles/color palettes.)