Changing Blog Title Link

My blog is a subpage of my webpage. news.xxxx.com. I would like the title link to point to https://www.xxxx.com instead of the main blog page. It seems when I change the blog and wordpress directory settings it messes up some of the comment linking and other settings.

edit: Ive changed the header.php in the themes folder from
<h1><a href="<?php bloginfo('url'); ?>" title="<?php bloginfo('name'); ?>"><?php bloginfo('name'); ?></a></h1>
to
<h1><a href="www.xxxx.com">xxxx.com</a></h1>
but now the title link goes to https://news.xxxx.com/www.xxxx.com