Contributors guide

[akselkvitberg]

There should be a contributions guide that outlines how to make a change to the documentation.

• How to make a pull request and what is should contain
• Who can approve or decline a pull request
• Who merges the pull request in the end

https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/setting-guidelines-for-repository-contributors