BEIJING—Marie-Philip Poulin reminded everyone of her Captain Clutch reputation. And Canada regained its place atop the women’s hockey world. It was only fitting that Poulin delivered at a time her team needed it most by scoring twice, including her third Olympic gold-medal clinching goal, in Canada’s 3-2 win over the defending champion United States at the Beijing Games on Thursday. After winning gold in her first two Olympics, Poulin learned to appreciate how significant capturing her third was, coming four years after losing it to the Americans at the Pyeongchang Games. “I just got shivers,” she said. “That 2018 was very hard, very, very hard. And I think when you take some time to reflect on what you need to do better as a team and personally,” Poulin added. “We did that and I’m very happy that we’re resilient and we’re able to put that back in the past and …