WI: I-41 exit issue

[rickmastfan67]

1A(894) -> 38 (same change needed for US-41 too, as exit numbers here are also based on US-41 mileage)

[Highway63]

It's signed 1A NB, and since it was designed to overlap I-894 the whole way, I thought it made sense to stick with that for when it was created and 41/45 changed.