message: Fix typo in bounding box example
diff: @@ -30,7 +30,7 @@ height of the underlying image.
  For example, if an image is 100 x 200 pixels (height x width) and the bounding
  box is `[0.1, 0.2, 0.5, 0.9]`, the upper-left and bottom-right coordinates of
  -the bounding box will be `(40, 10)` to `(100, 50)` (in (x,y) coordinates).
  +the bounding box will be `(40, 10)` to `(180, 50)` (in (x,y) coordinates).
  Parts of the bounding box may fall outside the image.
  END
  