I had a WordPress site which was moved to a directory called "test". Now, all the urls for the wordpress site is domain.com/test, /test/wp-admin. The main index page is a custom html page for domain.com. Now, I want to move the WP back to the root directory but let the domain.com point to the same custom html page. How can I achieve this? The custom html page is independent of the theme used in the WP site.