"x panel comic" aliases and implications

The tag 2 panel comic sets a good precedent: it has the aliases “two panel comic” and “two panels”, and it implies “comic”. So our “4 panel comic” and “6 panel comic” tags should follow suit:

four panel comic, four panels -> 4 panel comic (already implies “comic” so that’s good)

Six panel comic, six panels -> 6 panel comic, should imply comic.

And from personal experience, this would be helpful because just a few minutes ago I searched for “six panel comic”, found nothing, and thought there wasn’t a tag for it, because I didn’t think to search “6 panel comic” instead.

Done.