Add links to USWDS documentation from example app

Could look like this:

Input (<usa-input>)

Component docs

(rest of sample)

Or like this:

Input (<usa-input>)

(rest of sample)

I lean towards the first option because it's clearer what the link goes to.

assigned to @kpage

mentioned in merge request !25 (merged)

Yeah, I agree that the separate link is more clear. I was going to maybe say we add the name as part of the link,

"usa-input component documentation"

but I think what you have is good!

mentioned in commit 73e1354c

closed with merge request !25 (merged)