There’s a new horseback riding instructor at the Got to Trot Stables. His name is Colt Canter. No, the name came from his parents, who were pistol fans and singers, but not good spellers. The stables’ motto: We can teach you to ride, come rein or come rime. Sara Suspenders is taking lessons. She said, “The first sessions were in a classroom. Colt started out by saying, ‘Welcome to riding instructi…