message: update leelaz.ctl file
diff: players = {
  + # The leelaz path below assumes that the leela-zero root directory lives in
  + # the same parent directory as the minigo root. Please modify the leelaz path
  + # as required if this is not the case.
  "leelaz" : Player("../leela-zero/build/leelaz"
  - " --weights best-network"
  + " --weights %s"
  " --timemanage fast"
  - " -g",
  - startup_gtp_commands=[],
  - cwd="../leela-zero/build"),
  + " -g" % FLAGS.model,
  + startup_gtp_commands=[]),
  }
  