The template weren't applying the default labels ever since I renamed
the labels.
There has been enough issues about documentation opened recently so it's
probably worth a template for it.
This commit makes use of HTML comments inside GitHub issue templates
to make sure that even if they aren't removed by the issue author they won't be shown
in the rendered output.
The goal is to simply make the issues less noisy by removing template messages.
* Create new issue templates
* style -> design
* Apply suggestions from code review
Co-Authored-By: Hugo van Kemenade <hugovk@users.noreply.github.com>
