text change for bucket priority UI

Change-Id: I6385a265e95138ac7735b3abc9a09e961578f038
Reviewed-on: http://review.couchbase.org/36016
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>