A list of tools for generating static websites
github.com
github.com
You anchors do not work.
For example, for Ruby you have this at the link destination:
<a name="user-content-ruby"
class="anchor"
href="#ruby"
aria-hidden="true">
<span class="octicon octicon-link"></span></a>
But it needs to have id='ruby' or name='ruby'Or change the top link to refer to #user-content-ruby and not #ruby.
Second, your link to Webby (A Ruby tool) fails. That project moved to github a while ago: https://github.com/TwP/webby
But even that is a bit old, because the project is no longer maintained. I believe someone assembled an updated version (to work with recent Ruby changes) but I don't think it's any of the forks of tat project, and I don't recall where I saw it. (I use Webby but hack on my own private copy of the code.)
I think you need to review your links and possible provide some notes to indicate if a project is active.