Eric Adams won the 2021 New York City mayoral election held on November 2, 2021, defeating Republican nominee Curtis Sliwa with about 67% of the vote, and he was sworn in as the 110th Mayor of New York City on January 1, 2022. (en.wikipedia.org)

Since the prediction was that “Eric Adams is going to be the next mayor of New York City” (i.e., win the 2021 election and become mayor), and this is exactly what happened, the prediction is right.