Hii, first of all, thank you so much for the amazing theme project and for this template!
The issue I faced, after I setup the theme perfectly for my repo is, everything worked fine, except the theme didnt got applied to all the markdown files. It only was applied to the index.md in docs/ folder, since i put the layout: default front matter property for this file.
After some surfing, I figured out about the gem files, plugin inside the _config.yml file, etc. Then realized, the jekyll-default-layout is a required plugin for the theme to be applied to all the files/pages.
So, I feel, it should be already configured inside the _config.yml file, instead of user to figure it out and put it themselves.
Let me know, if that was the case, or I did something wrong.