A small proxy written in NodeJS used to easily access JavaDocs for Javacord.
In this case you are wrong here. Just head over to the Javacord repository.
Javacord's Teamcity server (https://ci.javacord.org/) generates JavaDocs for every commit on GitHub and every released version. These links aren't that easy to access though, as they look like this:
https://ci.javacord.org/repository/download/Javacord_PublishSnapshots/3853:id/javacord-api/javacord-api-3.0.0-SNAPSHOT-javadoc.jar%21/overview-summary.html
This proxy "coverts" these ugly urls into more user-friendly ones like this:
https://docs.javacord.org/api/build/3853
If you want to run this yourself for whatever reason, you can use Docker:
git clone https://github.com/Javacord/Javadoc-Proxy.git
cd Javadoc-Proxy
docker build -t javadoc_proxy .
docker run --rm -d -p 8080:80 --name javadoc_proxy javadoc_proxy