Additionally check for wrong formatted Wikipedia values
function checkWikipedia(brands) {
    Object.keys(brands).forEach(k => {
        ['brand:wikipedia', 'operator:wikipedia'].forEach(t => {
            let wp = brands[k].tags[t];
            if (wp && !/^[a-z_]{2,}:[^_]*$/.test(wp)) {
                _wrongFormat.push([k, wp, t]);
            }
        });
    });
}