NetflixWrestling might be choreographed, but in his latest docuseries, Cheer and Last Chance U director Greg Whiteley proves just how real the emotions that form its foundation really are.Thanks to his past hit Netflix series, Whiteley has risen to prominence as a devout chronicler of underdogs. That impulse is alive and well in this riveting seven-part documentary which made its debut on the streaming service Wednesday. The series observes the many, many triumphs and challenges unfolding within