docs(guide): update directive guide to not imply ngView is part of core

docs/content/guide/directive.ngdoc

@@ -22,7 +22,7 @@ At a high level, directives are markers on a DOM element (such as an attribute,
 name, comment or CSS class) that tell AngularJS's **HTML compiler** ({@link ng.$compile `$compile`}) to
 attach a specified behavior to that DOM element or even transform the DOM element and its children.
 
-Angular comes with a set of these directives built-in, like `ngBind`, `ngModel`, and `ngView`.
+Angular comes with a set of these directives built-in, like `ngBind`, `ngModel`, and `ngClass`.
 Much like you create controllers and services, you can create your own directives for Angular to use.
 When Angular {@link guide/bootstrap bootstraps} your application, the
 {@link guide/compiler HTML compiler} traverses the DOM matching directives against the DOM elements.