Clarifiying Documentation Links
Summary: Fixes T8487.
Test Plan: Verify that links are clear at Diviner > Phabricator Contributor Docs > Using the Phabricator OAuth Server.
Reviewers: lpriestley, #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T8487
Differential Revision: https://secure.phabricator.com/D13240