[bug#70047] why use git-fetch

[chris]

It may be useful to explain why url-fetch is replaced with git-fetch here. 
highlight@4.11 was released over a week ago and is only available from the 
gitlab location and not the website,

https://gitlab.com/saalen/highlight/-/releases
http://www.andre-simon.de/zip/download.html

With other indicators, it seems the website exists now in a sort-of 
maintenance-mode. The website has bugs: for example, some pages aren't 
scrollable to some content can only be accessed by zooming out multiple steps. 
The gitlab project front page documentation seems more up-to-date and more 
usable as well.