chore(validate_urls.sh): remove whitespace after comma
chore(validate_urls.sh): remove whitespace after comma

AngularClass/awesome-angular,GDGAracaju/incrivel-lista-angular2,AngularClass/awesome-angular,AngularClass/awesome-angular2,angular-class/awesome-angular2,AngularClass/awesome-angular2,GDGAracaju/incrivel-lista-angular2