[chore] Update the documentation credits automatically from the Mediawiki API

[andrewnicols]

What do we need to do?

There's a few APIs we can use:

• https://docs.moodle.org/400/en/Special:ApiSandbox#action=query&format=json&list=allusers&auprop=editcount&aulimit=max&auwitheditsonly=1
• https://docs.moodle.org/400/en/Special:ApiSandbox#action=query&format=json&list=users&usprop=groups%7Ceditcount%7Cgender&ususers=andrewnicols

Netiher are great and will take a lot of work to do. Sadly none of those APIs are in the nodemw implementation (https://github.com/macbre/nodemw).