API link on README is broken

[tiflynn]

In the Documentation section of the README, there is a link to the SOAP UI API docs. It points to https://www.soapui.org/apidocs but I am getting Access Denied. Where can I find the API docs for 5.7.0?

AccessDenied Access Denied VF0M1VY7H25S8J1J o6UdIayP/+Hp7stKwTNwZxUZ5oFx+oDsLTD0g9aY/JtiJrDezAAtPqIgdMB1yMqdi9cZxo+2p6E=

[gizmo71]

I think the link should point here although those haven't been updated since 5.6.0. :-(