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

drawbot/drawBot/drawBotDrawingTools.py

Line 2007 in 45a8ddf

image("https://d1sz9tkli0lfjq.cloudfront.net/items/1T3x1y372J371p0v1F2Z/drawBot.jpg", (100, 100), alpha=.3)

- reference in code

[blech]

I found the source image in the repository and made a pull request replacing the 403 URL with a working one.