message: docs(api): Fix `move()` example
diff: @@ -125,7 +125,11 @@ class Location:
  >>> loc = Location(Point(1, 1, 1), None)
  >>> new_loc = loc.move(Point(1, 1, 1))
  - >>> assert loc_2.point == Point(2, 2, 2) # True
  + >>>
  + >>> # The new point is the old one plus the given offset.
  + >>> assert new_loc.point == Point(2, 2, 2) # True
  + >>>
  + >>> # The old point hasn't changed.
  >>> assert loc.point == Point(1, 1, 1) # True
  """
  