Yes, that’s right because you are using an enterprise version. 2020.4 will be released in future as far I do know.
form second link take a notice to this line:
All the changes brought to the community after 2019.10, such as 2020.1 and 2020.2 are captured in the 2020.4 version of the documentation.
I am talking about the new assistant that came out which is explained here
I take your word in that way that you are not talking about this one: https://docs.uipath.com/robot/docs/agent-desktop