Highly doubtful that your fork bent. I used to race an aluminum BMX bike, and I guarantee it took many worse hits, at much higher speeds than yours did. If your fork bent at such a slow speed, and low impact, you would not be able to ride it on a normal street ride involving the normal bumps and potholes. That is, unless your fork was made by joining empty beer cans together.

Center the wheel, tighten, and ride.