R1:08e61c6ff18f

Phabricator changes for TOC markup

Summary: See T2333 / D4565. Fixes the Phriction rule.

Test Plan: See D4565.

Reviewers: btrahan, vrana

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2333

Differential Revision: https://secure.phabricator.com/D4566