Create an account on the wiki, go to the #wiki channel on the Fabric Discord, and ping Asie with your wiki username and state that you request wiki editing access.

Search for the page name you want to create, when not found click on the link on:

…you can create or edit the page :a_new_page, named after your query.

or, just type the URL in your browser, for example to create a page named a_new_page under tutorial

https://fabricmc.net/wiki/tutorial:a_new_page?do=edit

https://www.dokuwiki.org/wiki:syntax

https://pandoc.org/

[ agenda ] See what is on the current agenda, and what other contributors are currently working on.

What nobody tells you about documentation