Yep, that's the stuff. That packet (or at least a packet of actual wine yeast) would handle up to five gallons, so we're really supercharging the process here. When I make a gallon batch of anything, I use the full packet.
You probably also saw "Rapid Rise" Fleischmann's as well. People have said that works just the same, and I don't recall if the JAOM "warranty" specifies 'Traditional' as opposed to 'Rapid Rise' or not, but I have found that in baking, at least, the rapid rise yeast is not as 'strong' in the long run.
Congratulations, you're on your way to making mead! Welcome to the obsession. <grin>
Joe