concepts.ngdoc text refers to ng-app, but snippet uses ng-init

[kryft]

The text after the first code snippet in http://docs.angularjs.org/guide/concepts says

In the example above we use the ng-app attribute, which is linked to a directive that automatically initializes our application.

but the snippet actually uses ng-init instead, which is confusing, especially since ng-init isn't mentioned anywhere in the text.

[petebacondarwin]

Fixed already by f7b3684