Becoming a wiki editor is a great thing to do, and there is probably a wiki for your language.
If you're a wiki editor that's interested in spreading the word about the Scratch wikis, feel free to leave a comment and you can join.
If you're not an editor, have any questions about your wiki, then please do leave a comment and ask.
Here are the links to every current wiki:
Learn about Wiki Wednesday: https://scratch.mit.edu/studios/4675048/
The amazing thumbnail was made by @oriquack
Join the wiki: https://en.scratch-wiki.info/wiki/S:JOIN