Fix syntax error in yaql hot spec example
Fix syntax error in yaql hot spec example

The template example is malformed because the output doesn't define
a value.

Change-Id: I967510a8f1bc4c80570be25dec77c2562d0dd1ec

cwolferh/heat-scratch,noironetworks/heat,cwolferh/heat-scratch,openstack/heat,openstack/heat,noironetworks/heat