By Ian Ransom MELBOURNE (Reuters) -A ruthless Novak Djokovic resumed his reign over Melbourne Park by winning a record-extending 10th Australian Open title on Sunday and crushing the Grand Slam dream of Greek trailblazer Stefanos Tsitsipas in a one-sided final. In a rematch of the 2021 French Open decider, Djokovic swept to a 6-3 7-6(4) 7-6(5) victory at Rod Laver Arena to reclaim the world number one ranking and again deny Tsitsipas a maiden major title. The atmosphere was electric and the crowd often unruly as Serbian and Greek fans bayed in the terraces as if roaring on football teams. But …