The Vegas Golden Knights (6-2-1) extended their home winning streak to six games with a dominant 7-3 showing against the San Jose Sharks (0-7-2) Saturday night at T-Mobile Arena. William Karlsson made his season debut, and he did not disappoint. Karlsson finished the game with the game-winning goal, an assist, a plus-two rating, three shots and two blocks in 13:58. But it was a…