Relates to: torrust/torrust-index#738

I'm working on the new website. Some sections include information similar to what we have in the documentation. For example, the installation. I have found some errors, I will track them with this epic.

Docs: https://docs.rs/torrust-tracker/latest/torrust_tracker/index.html
New website: https://v2.torrust.com

Errors

The documentation here links to an old docker URL:

https://github.com/torrust/torrust-tracker/tree/develop/docker

It should be:

https://github.com/torrust/torrust-tracker/blob/develop/docs/containers.md