Modernize documentation links

Summary:
  - Point them at the new Diviner.
  - Make them a little less cumbersome to write.

Test Plan: Found almost all of these links in the UI and clicked them.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D8553

src/applications/diffusion/controller/DiffusionRepositoryEditMainController.php

@@ -769,8 +769,8 @@ final class DiffusionRepositoryEditMainController
       }
     }
 
-    $doc_href = PhabricatorEnv::getDocLink(
-      'article/Managing_Daemons_with_phd.html');
+    $doc_href = PhabricatorEnv::getDocLink('Managing Daemons with phd');
+
     $daemon_instructions = pht(
       'Use %s to start daemons. See %s.',
       phutil_tag('tt', array(), 'bin/phd start'),