doc: automatically link classnames to their documentation pages throughout API docs

**I'm submitting a feature request**

I'm not sure if this is the most appropriate place for this request, but I could not find the hub.html app that serves Aurelia documentation open sourced anywhere (so I can't try and implement this on my own to contribute).

Basically, anywhere there's a classname (or ideally, method/property/etc.) in the API docs served by hub.html, it would be brilliant if it was an `` link to that class's documentation page. Right now, it's really difficult for someone not familiar with the framework to find the right page in the API docs, because I have to use the search tool just to figure out what package a class is contained in. If I could simply click the classname and go straight there, life would be much happier.

The issue identifies hub.html as the app serving Aurelia documentation, but says its source could not be found open source. Start by locating the implementation that generates the API docs and determine whether class, method, and property references can be resolved to documentation pages. Done means relevant references throughout the served API docs link to their corresponding pages.

Written by the indexing model from the issue text.