Description says "Uses 1 bus stab Uses one space". Clearly it takes two, as required to get both phases (230V). Can you fix this listing?

Lowes has many errors in their descriptions and they will eventually fix this one too. By the way, there aren't two phases in the typical single phase panel. The only time a 2-pole breaker will pick up two phases is when there is 3 phase service to a 3 phase panel.