What you read here is the index.apt file in src/site/apt/ that gets translated to the index.html page.
Without that file (or an index file in some other format, see the creating a site page of the maven project) nothing will be displayed.
In the menu on the left you find quick links to the different sub-topics that are mentioned here. I will explain how I created this specific site on github pages using this repository.
Without further ado, let\'s go:
This chapter explains what you need to put in your pom.xml file for maven to be able to create the static html pages needed for github pages
This explains what to put in the site.xml File.
Here you find hints for creating the content you can read here.
Steps to take to build the documentation, copy it to the docs/ folder and have it appear on the web.