MB-10793: correct spelling mistake

Change-Id: I32126a319bbdfd0b1648eb210cc7d6219203eead
Reviewed-on: http://review.couchbase.org/35618
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Tested-by: Eric Limare <eric.limare@couchbase.com>