CBQE-0: fix typo

Change-Id: I74e2804ed1ab3b620314013966fe46c8085d4484
Reviewed-on: http://review.couchbase.org/29587
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>