message: Fix `create_rect` function documentation
diff: @@ -105,7 +105,8 @@ impl<'a> Lines<'a> {
  }
  }
  -/// Create a rectangle between two cells.
  +/// Create a rectangle that starts on the left of `start` and ends on the right
  +/// of `end`, based on the given flag and size metrics.
  fn create_rect(
  start: &RenderableCell,
  end: &RenderableCell,
  