<?php
switch ($trusted_shops->getLanguage()) {
    case 'de':
        $lang = __('Niemiecki');
        break;
    case 'en':
        $lang = __('Angielski');
        break;
    case 'fr':
        $lang = __('Francuski');
        break;
    case 'pl':
        $lang = __('Polski');
        break;
    default:
        $lang = '-';
        break;
}
echo $trusted_shops->getUrl().' ('.$lang.')';