fix wrong logic for katana_print_media_query()

[htower]

Old version is wrong. For example for this simple css

@media screen and (min-width: 768px) {
  .selector{
    property: value;
  }
}

it return such dump

@media (min-width: 768px) {
.selector {
  property: value;
}
}

instead of

@media screen and (min-width: 768px) {
.selector {
  property: value;
}
}