On face value, it would be very unusual to do this. The baby's lungs can be mature at 36 weeks, but 36 weeks is the center of a bell curve.
Some babies do it earlier, some later.
In my area, the standard of care is to not induce before 39 weeks unless there is an overriding danger to mother or infant. But at or after 39 weeks. Of course, I don't really know all of the details here, and I assume that there are other reasons for a doctor's decision to induce that early. If there were a psychologically damaging traumatic delivery in the past, an earlier delivery's benefits for the mother may outweigh the risks to the infant. Or if there had been a fetal death at or around the due date, I can understand a mother's desire to get a known prematurity situation out into the outside world than worry about the unknown chances of another tragedy.