Replace some hsprintf() with phutil_tag()

Summary:
I just want to make sure that this is the style we want.
It seems less readable to me in some cases.

Test Plan: Looked at DarkConsole with errors.

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Differential Revision: https://secure.phabricator.com/D7533