readthedocs v.latest and v.beijing require alignment.

https://onap.readthedocs.io/en/latest/guides/onap-developer/developing/index.html#music
Music Developer Documentation

Installation
Setup for Developing MUSIC
Release Notes
Architecture
Logging
Configuration

https://onap.readthedocs.io/en/beijing/guides/onap-developer/developing/index.html
Music Developer Documentation
Single-SIte Install (Check correct letter case)
Muili-Site Install (Correct title spelling)
Setup for Developing MUSIC
Release Notes

Update needed to ensure v.latest and v.beijing are consistent. Containing all sections (in bold) of the documentation