Minor typo "abou" in conduit help


Observed Behavior:
Typo abou in diffusion.repository.search help. Visit https://secure.phabricator.com/conduit/method/diffusion.repository.search/ and look for paragraph under the “Object Fields”.

Expected Behavior:
about instead abou

Phabricator Version:
master of Phabricator

Reproduction Steps:
Visit https://github.com/phacility/phabricator/blob/40af472ff59517258005bd2e8c06ec5ddd68d4d7/src/applications/search/engine/PhabricatorSearchEngineAPIMethod.php#L406 (which appears to be master at the time of writing) and notice text says:

`fields` key, which contains the information abou the object that most callers


Thanks, see https://secure.phabricator.com/D20280.

closed #3