Yes, Bryan, Ryan is correct.
Where the tie rods connect to the spindle is the tie rod end, and a shaft from the steering is threaded into that. There is a jam nut to lock it down. You back off the jam nut and turn the shaft that comes out of the rack to adjust it.
Until you get the "feel" of it, use a 1/4 turn of the thing so you don't get out of hand.
You can also use these adjustments to center your steering wheel. Once you have toe in proper, you can lengthen the side that your steering wheel is turned towards slightly, and shorten the other side by the same amount.
By the way, the threads on these adjustments are all standard right-hand thread. If you're left handed, you can't do this adjustment at all...