Image in example code no longer accessible

[blech]

The documentation at drawbot.com references an image that is no longer accessible; it returns a Cloudfront 403 error. Either the image's attributes need to be changed, or it needs to be hosted elsewhere and the link updated.

https://www.drawbot.com/content/image/imageProperties.html - page referencing

https://d1sz9tkli0lfjq.cloudfront.net/items/1T3x1y372J371p0v1F2Z/drawBot.jpg - inaccessible image URL

https://github.com/typemytype/drawbot/blob/45a8ddfc88662c2d5d05e23378a8b7224439a2fe/drawBot/drawBotDrawingTools.py#L2007 - reference in code