CBQE-0: fix typo

Change-Id: I9dec61ae25260c0c96c431038d5c1fc00ec12681
Reviewed-on: http://review.couchbase.org/29675
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>