CBQE-0: fix typo

Change-Id: I2758f86ba4947cd871900308c904e023b8e35d0a
Reviewed-on: http://review.couchbase.org/42695
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>