Exactly as GM4Him say ...
And nope, the tooltip ingame is exactly the same as here:
https://baldursgate3.wiki.fextralife.com/Magic+MissileYou can figure that out by the fact that this is the only spell that dont have any "Attack/Save" descriptions like the others ... but i really hope Larian didnt expect us to search for such clues. o_O
And since i would never ... i dare to presume that Magic Missiles tooltip was updated (downdated more like?) recently. :-/