Corrected the invalid link to Stacks.yaml

The incorrect link went to:
https://raw.github.com/jboss-jdf/jdf-stack/master/stacks.yaml#sthash.2dfdvzMC.dpuf

Should go to:
https://raw.github.com/jboss-jdf/jdf-stack/1.0.0.Final/stacks.yaml