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