Boeing don't publish a balked landing procedure. It's left up to certain operators and regulators to train their own procedures. However it is basic airmanship to ensure full thrust is applied. A pull up manoeuvre is a bad idea as you would need to pull the nose up to 20 degrees whereas a rejected landing requires maintaining the current attitude until climbing safely away when a normal go around can be followed (TOGA, retracting flaps to go-around setting, then gear).