They were the power chords that sparked a musical revolution: three growling, fuzzy blasts that made Link Wray’s 1958 banned-by-radio instrumental “Rumble” a rule-breaking inspiration for rock guitarists who followed. The song kicks off the documentary “Rumble: The Indians Who Rocked The World,” from Montreal-based filmmakers Catherine Bainbridge and Alfonso Maiorana, which has its world premiere Sunday in competition at the Sundance Film Festival and will air on The Movie Network later this year.