Since WordPress is installed under /wordpress/ url.
and root / URL do not have any important content. so we need redirect URL / to URL /wordpress/
hear is the Nginx code to redirect
so at nginx.conf under server block add below
location = / {
return 301 /wordpress/;
}
location = / means when user is access URL /
301 is http redirect code. the browser will do redirect to another place.
/wordpress/ is after 301, so this is the place where browser will redirect to.
so it will redirect / to /wordpress/.