R1:81334651a930

Fix a name mismatch in PhrictionDocumentQuery

Summary: Fix an oversight in {D5285}

Test Plan: works smoothly again :D

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T2686

Differential Revision: https://secure.phabricator.com/D5294