How to commit wiki changes

What is the method to commit github changes for another user’s repository images in the wiki?

What is the method to delete or fix dead links?

What is the method to add spacing?

The instructions appear to be silent on this.

This actually has little to do with ArduPilot …

Well, actually it does.

Here is the guide for editing the wiki.
https://ardupilot.org/dev/docs/common-wiki_editing_guide.html

Thank you for this Josh.