Docs - Multi Site Origin not up to date

Current documentation for multi site origin is confusing/wrong/out of date:

https://github.com/apache/incubator-trafficcontrol/blob/master/docs/source/admin/quick_howto/multi_site.rst
Bottom has steps that references configuration that I think has been replaced with delivery service profiles.
https://github.com/apache/incubator-trafficcontrol/blob/master/docs/source/admin/traffic_ops/using.rst
mentions the new delivery service profile pieces, but not the cachegroup side of multi-site configuration.