Docs: update link for remote debugging
Docs: update link for remote debugging

The section on remote debugging points to a blog post that not longer
exists. This updates the invalid link.

The patch also adds in some new lines and bullets.
TrivialFix

Change-Id: I8b29f402f148bc11279a2c34aeea266956180bc1

openstack/nova,mikalstill/nova,openstack/nova,openstack/nova,klmitch/nova,gooddata/openstack-nova,mahak/nova,mahak/nova,mikalstill/nova,gooddata/openstack-nova,klmitch/nova,rahulunair/nova,klmitch/nova,mikalstill/nova,mahak/nova,rahulunair/nova,rahulunair/nova,gooddata/openstack-nova,klmitch/nova,gooddata/openstack-nova