Hi Jo, I'm not sure about the wiki id thing as looking at your suggestions list there are multiple comments on them.
To make them disappear you have to pick a box other than comment. If you have corrected the error select corrected and it will disappear until the suggestions list is redone usually on Tuesdays or so I think. And if it it is truly corrected it wont reappear.
If the suggestion is incorrect such as a unique name spelling that is actually correct mark it as a false error and it will disappear forever.