How do I alter a coin article I made

I tried to make my first coin was adding issues in for Lundy, and for some reason it said issuer was some city state in Iberia after I made the article how do I change this ?

If the new coin has been validated then at the bottom of the coin page click Modify or add data on this page.

If the coin has not yet been validated then click Edit at the top of the new coin request.