When you’re using github for editing the podium guide in markup you might take a look at Grav CMS. It’s a open-source lightweight (no database) flatfile CMS that uses markdown files for its pages.
There is an git-sync plug-in available that can connect to git and make a website out of git’s markup files.
https://getgrav.org/blog/git-sync-plugin
One example is the Grav CMS documentation at https://learn.getgrav.org/
On top of the page you see a “edit this page” link that opens the corresponding markdown file in git.
Grav just needs PHP, so you can put the files of one instance in a subdirectory of your website and place the documentation there
