Fix wrong example in HACKING.rst
Fix wrong example in HACKING.rst

Example of Human Alphabetical Order Examples section in HACKING.rst
is wrong, this patch fixes it to the right order.

Closes-Bug: #1213568

Change-Id: Ib7f8baf20c437c3fa776201998c36f33bdde2f78

openstack/neutron-vpnaas,citrix-openstack-build/neutron-vpnaas,openstack/neutron-vpnaas,dougwig/x-neutron-vpnaas