Added missing protocol to font googleapis

[iwan]

Tiny change: added 'http' protocol to font GoogleAPIs

[dan1elhughes]

This isn't an error, it's a shorthand that uses HTTP or HTTPS depending on whatever the page is loaded over.

[xorlof]

Actually, protocol relative URLs are becoming an anti-pattern. h5bp recently dropped them. If HTTPS is available (it is for googleapis), you should now link to that. See the update at the top of this old Paul Irish post for the rationale: http://www.paulirish.com/2010/the-protocol-relative-url/