Support dot shortcut on doc pages to instantly edit them
## Problem
I often to (small) doc changes using the GitLab editors, like the "Single file editor", but also the WebIDE.
My starting point for such a contribution is often the actual doc page I want to edit. From there I'll move to the very bottom, expand the collapsed `Help & Feedback` section and and press `Edit this page` which redirects me to the GitLab projects file browser where I have to initiate the actual edit.
These are quite a bunch of steps involved to actually then edit the file. To resolve a typo from the docs page I takes me more keystrokes the initiate the edit than the changes I want to make.
## Proposal
It would be awesome if I could just press the dot (`.`) key to open up "an" editor to initiate the contribution from there.
There are a bunch of questions that need to be clarified:
- Where is the commit made? A fork? Would that be created on the fly? (I don't know what the WebIDE does when I commit tbh.)
- Which editor is launched? The WebIDE? The single page editor?
issue