Hy,
In the theme functions.php file on line 155 you will find the following code:
/***** Logo / Header Image Fallback *****/
if (!function_exists('mh_logo')) {
function mh_logo() {
$header_img = get_header_image();
echo '<div class="logo-wrap" role="banner">' . "\n";
if ($header_img) {
echo '<a href="' . esc_url(home_url('/')) . '" title="' . get_bloginfo('name') . '" rel="home"><img src="' . $header_img . '" height="' . get_custom_header()->height . '" width="' . get_custom_header()->width . '" alt="' . get_bloginfo('name') . '" /></a>' . "\n";
} else {
echo '<div class="logo">' . "\n";
echo '<a href="' . esc_url(home_url('/')) . '" title="' . get_bloginfo('name') . '" rel="home">' . "\n";
echo '<h1 class="logo-name">' . get_bloginfo('name') . '</h1>' . "\n";
echo '<h2 class="logo-desc">' . get_bloginfo('description') . '</h2>' . "\n";
echo '</a>' . "\n";
echo '</div>' . "\n";
}
echo '</div>' . "\n";
}
}
You can edit and change the link here.