kong: update migrations instructions for Kong 1.0+
kong: update migrations instructions for Kong 1.0+

avoinea/docs,docker-solr/docs,Bonitasoft-Community/docker_docs,odoo/docker-docs,nats-io/docker-docs,crate/docker-docs,odoo/docker-docs,jetty-project/docker-docs,infosiftr/docker-library-docs,avoinea/docs,tilosp-docker/library-docs,31z4/docs,Lightstreamer/docs,infosiftr/docker-library-docs,tilosp-docker/library-docs,Bonitasoft-Community/docker_docs,31z4/docs,nats-io/docker-docs,Lightstreamer/docs,jetty-project/docker-docs,dinogun/docs,docker-solr/docs,dinogun/docs,docker-library/docs,docker-library/docs,crate/docker-docs