If you want to help fixing issues in the Archaelund wiki, you can request to help here:
How to contribute to Archaelund Wiki
You don't automatically get access to make changes, but you have to request to have a wiki account.
Because this is a newer game, there is still a lot of info missing, so it's always good to help fill in more of the wiki.
While there is still a lot changing because the game is under active development, I think certainly around Port Galeb everything should be mostly stable, so those quests and items can certainly be added to the wiki.