change elasticsearch text query to match query for compat with 1.1.0

Summary:
ElasticSearch silently removed the long-deprecated text query in favor of the match query. match works just like text, so the fix is simple.

fixes T5507

Test Plan: see if the breakage is fixed

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: WikiChad, epriestley, Korvin

Maniphest Tasks: T5507

Differential Revision: https://secure.phabricator.com/D9784