Wrong example of the canonical form license

[jannewulf]

I've found an error in the example of the canonical form of the license json. The link object is not sorted. The rel object is misplaced.

See:
https://github.com/readium/lcp-specs/blame/fb4cc47b13952cc7d8ae077c2db005aa718f5faa/releases/lcp/latest.md#L737
https://github.com/readium/lcp-specs/blame/fb4cc47b13952cc7d8ae077c2db005aa718f5faa/releases/lcp/latest.md#L752