Fix a "withHasTransactions()" typo in AuditEditor

Summary: See https://discourse.phabricator-community.org/t/typo-in-phabricatorauditeditor-php/1910. This is trivial and reproduces easily, I just missed it in testing.

Test Plan:

• Left a comment on a commit which I was the author of.
• Before change: fatal with obvious typo.
• After change: smooth sailing.

Reviewers: amckinley

Reviewed By: amckinley

Differential Revision: https://secure.phabricator.com/D19667