Need assistance with adding an app for pipeline integrations

I’m running through the examples in the documentation for installing a Toolkit app in anticipation of writing some for our pipeline. I have reached the part of the documentation that looks like this:

There are two links included in the text. Apps and Engines page and information for the app
Neither of these links show me anything that looks like the images referenced above, nor am I able to piece together any information that seems to be what I’m looking for.
Are these links pointing to the correct location? If so, can someone please help me understand what I’m missing?