How to change the text displayed of Ember/Handlebars link-to?

I am new to Ember (and Handlebars.js). The following code displays the word "Preferences" and it is a link:

<li></li>

I realize that it is that is displaying the text I want to change because I can remove it and insert plain text and it will display what I want. However, I want to understand where the text is coming from: a model, route, controller? This code is found in a user.hbs template.