Please check steps in "P02: Create documentation for an ONAP release (ONAP project teams)" https://wiki.onap.org/x/w4IEBw and update your doc config files using the example files provided in https://git.onap.org/doc/tree/examples/sphinx?h=kohn

Relevant repos:
dmaap/buscontroller
dmaap/datarouter
dmaap/messagerouter/messageservice

Relevant doc config files are:
 - .readthedocs.yaml
 - conf.py
 - requirements-docs.txt
 - tox.ini
 - ribbon.css

Please update config files in master and cherry pick to Kohn branch.

Important: To create the Kohn release documentation in ReadTheDocs you need to change at least one of your .rst files in the Kohn branch. This update will (initially) trigger the RTD build.