R1:f59a38218927

Consilidate blue links in source-sans documents

Summary: We had two different blues for links here, cleaning that up.

Test Plan: Read a few Diviner documents

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11818