NBC’s critically acclaimed comedy “Superstore” has been renewed for a 6th season. “We’re thrilled that ‘Superstore’ continues to speak to many important and topical issues while simultaneously being hilarious,” said Lisa Katz and Tracey Pakosta, Co-Presidents of Scripted Programming, NBC Entertainment. In its fifth season, “Superstore” is averaging a 1.1 rating in adults 18-49 and …