Hello,

Welcome to the LabKey Environment!

If your Wiki is just plain HTML then the "Project Admin"/"Editor" role would be sufficient. But if it includes some JavaScript, the users will need to be a part of the "Developers"/"Site Admin" group.
If you do not want to have the other users as "Site Admins" then "Developers" should allow them to successfully edit the wiki.

https://www.labkey.org/Documentation/wiki-page.view?name=devRoles#platformDeveloper

Configuration of your virtual environment looks good.

Thanks,
Chet