It happens all the time. He'll have an opportunity to revise it later before PIR.
He hasn't even submitted the names yet. He won't do that until 3 to 10 days before PIR. All is well. If you are in doubt that he knows the correct names to put on the Access list when the time comes, write to him and let him know, but the form letter is for you and he knew that you know who MOM and DAD are. Go to Boot Camp Moms (and loved ones) and see the info in the "Answers to Common Questions" section under "How do I know who my recruit plans to put on the Access List:" for more on that. That info is in the middle and you have to scroll past it to get to the Comment Wall.