Tag Alias: back-to-back -> back_to_back

Alias:
back-to-back -> back_to_back

Reason: Alternate spelling.

And for the record, back-to-back is my preferred way of spelling it, but I doubt we'll change the status quo.

Yeah, mine too. I propose reversing this alias.

+1 for reversal

Hyphenated looks better here, so +1 from me too

Aliased to back-to-back.