By my reading, it doesn't. Which rule do you think it violates?
Section 11 covers In-App Purchases, which Amazon's app doesn't use, and which are only required for "content, functionality, or services in an App". Amazon doesn't let you buy anything to extend their app.
Amazon's app also doesn't allow purchasing ebooks, which is their only product (AFAICT) that might be covered by section 11. They have a note at the bottom of all ebook pages that says "This mobile application does not currently support Kindle downloads, however you may add the item to your Wish List and purchase it using the browser on your device".
Finally, section 20 explicitly prohibits allowing the user to purchase a lottery ticket, which suggests that there is nothing unacceptable about other real-world purchases. Lots of other apps allow them, too, like eBay.
Best Answer
Whatever be the reason, Apple has stopped providing PDF copies of most of it's Developer Documentation.
This won't work for all pages, but for your specific document, a PDF copy definitely used to exist (shown by this answer on SO).
The PDF itself is no longer available from Apple servers, but a quick Google search brought up this archived copy on CiteSeerX.
Whether you trust it is not modified or edited in any way is up to you (VirusTotal seems to say it's safe).