[site-reviews] Make the terms toggle checked by default

/**
 * Make the terms toggle checked by default
 * @param array $config
 * @return array
 */
add_filter('site-reviews/config/forms/review-form', function ($config) {
    if (array_key_exists('terms', $config)) {
        $config['terms']['checked'] = true;
    }
    return $config;
});