Will Thorne Staff WriterSteve James’ buzzy Sundance docuseries “City So Real” has landed at National Geographic.Nat Geo has acquired the series, which takes a multifaceted look at Chicago and its history-making 2019 mayoral election, and is lining it up for a fall premiere.The series hails from James, whose previous work includes “America to Me” and “Hoop Dreams,” and his longtime producing partner Zak Piper. It begins in the mid-summer 2018 when Mayor Rahm Emanuel shocked the city by