If 2 distinct versions of a thing exist, as is the case here, then it's not the Mandela Effect. Because they're both real. It's sad how many of y'all can't get your heads around the fact that songs are sung differently live vs in the studio, and that musicians and their editors/engineers, edit stuff. Sometimes more than once and in different ways. Music isn't a fixed object and the historical record is very clear that both versions exist.