[site-reviews] change tag used in review titles

/**
 * Replaces the <h3> in review titles with <h4>.
 * Paste this in your active theme's functions.php file.
 * @param string $field
 * @return string
 * @since Site Reviews v5.0
 */
add_filter('site-reviews/review/wrap/title', function ($field) {
    return str_replace(['<h3','h3>'], ['<h4','h4>'], $field);
});