In the Umbraco Documentation we use a very specific system for maintaining documentation for the various major and minor versions of our products.
This video will give you a run-through on how you can target a specific version of Umbraco when contributing to the documentation.
You can find a written guide on how to this in our Contribution docs: https://our.umbraco.com/documentation...
Resources:
Forking and cloning the UmbracoDocs repository: https://our.umbraco.com/documentation...
Styleguide: https://our.umbraco.com/documentation...
Markdown syntax and conventions:https://our.umbraco.com/documentation...
You can also visit the Umbraco Documentation for written guides about Umbraco via this link https://our.umbraco.org/documentation/