There is no "customization article"

Referring to this article: http://aurelia.io/hub.html#/doc/article/aurelia/dependency-injection/latest/dependency-injection-basics/5

The article refers in several places to a "DI customization article" without a link. Where is this article? Should be a hot link....

Start with the linked dependency-injection basics article and inspect each reference to the missing DI customization article. Confirm the article's location, then make those references hot links; done means the references resolve to the intended article.

Written by the indexing model from the issue text.