We don't usually close (or delete) wikis once they have been created. That's because wikis are owned by the community that builds them and the community that will use them in the future. If you aren't interested in a project any more, you can just leave it. Maybe someone will come along to adopt it and revive it!
If you just made a spelling mistake when you created the wiki, either in the URL or the name, no problem! Just let us know and we'll fix it for you.
However, if you feel your wiki is on a topic that no other users may be interested in (such as a personal project), please submit a closure request.
We hope you find another community among the many that are part of Fandom, and join in building a fantastic resource about everything you are passionate about.