By Tzvi Machlin The Buffalo Bills had the No. 3 offense in the NFL this past year thanks in no small part to a versatile offense that could beat teams in a variety of ways. So they’re making sure to lock down one of their most versatile wide receivers. On Sunday, the Bills announced that they are re-signing wide receiver Isaiah McKenzie to a two-year deal. In 2021 McKenzie had 20 catches for 178 receiving yards and one touchdown. But McKenzie also served as the Bills’ starting punt returner and kickoff returner. He returned 24 kickoffs for an average of 24.3 yards per return and 19 punts for 1…