Incorrect resource prefix in example

[jeremypw]

What Happened

On the page https://docs.elementary.io/develop/apis/gresource, the example code:

protected override void activate () {
    Gtk.IconTheme.get_default ().add_resource_path ("com/github/yourusername/yourrepositoryname");

    var main_window = new Gtk.ApplicationWindow (this);
    main_window.show_all ();
}

shows a resource prefix that is not preceded by a /. This inconsistent with the resource definition file:

<?xml version="1.0" encoding="UTF-8"?>
<gresources>
  <gresource prefix="/com/github/yourusername/yourrepositoryname">
    <file compressed="true" preprocess="xml-stripblanks">custom-icon.svg</file>
  </gresource>
</gresources>

Expected Behavior

The resource prefix should be consistent throughout the examples