Existing tags like howto or guide will work. 
I’m quite familiar with it.
Ask Fedora and Docs are already connected in many ways by cross-referencing solutions in Quick Docs and labelling ‘common issues’ in Ask Fedora.
My aim is to lower burden of super helpers in Ask Fedora and get more done by users self-help.
That’s fine. The idea is not to persuade helpers to go through Docs process and write articles. You already help users a great deal. You don’t have to feel obliged to write articles in Quick Docs.
But please understand it is not entirely Docs team’s role to write, review and maintain Docs. The work has to be spread across various working groups and one-time contributors as well as external contributors (we have some).