CBQE-0: fix a typo for toarray test

Change-Id: I9d157f4881314ec161098caa516c4eb7c6c5b2d9
Reviewed-on: http://review.couchbase.org/33175
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>