DOCUMENTARY MINISERIES PREMIERE: Back in May, Amy Schumer made a TV show, squirreled away in her family farmhouse with her chef husband Chris Fischer. It was refreshingly low-key, filmed by a few static cameras and by their nanny/assistant, who operated the one handheld camera, usually while the couple’s son, Gene, is napping). That was the Food Network’s Amy Schumer Learns to Cook, a charming little cooking show that recently was renewed for a second season. Before that, a