You can clone the documentation repositories in this directory before building the website by using the following commands:
> git clone --depth=1 https://github.com/UPBGE/UPBGE-Docs-build.git manual
> git clone --depth=1 https://github.com/UPBGE/UPBGE-API.git api
> git clone --depth=1 https://github.com/UPBGE/UPBGE-Docs-0.2.5-build.git manual_api_0.2.5