Add a simple docs icon next to the word "state" on embedded resources

I put it on state because putting it up in the accordion header
makes bootstrap's CSS all kinds of confused.

The icon is only shown if the embedded thing is a url (often
a curie). Thankfully the library makes this easy.
fix minor indentation thing for @fnd
Merge pull request #3 from cdent/embed-doc

Add a simple docs icon next to the word "state" on embedded resources