minor docs tweak

doc/advice_api.md

@@ -6,9 +6,8 @@ and `around` methods.
 These can be used to modify existing functions by adding custom code. All
 Components have advice mixed in to their prototype so that mixins can augment
 existing functions without requiring knowledge of the original implementation.
-Moreover, since Component's are seeded with an empty `initialize` method,
-Component definitions will typically use `after` to define custom `initialize`
-behavior.
+Mixins will typically use the `after` method to define custom `initialize`
+behavior for the target component.
 
 <a name="this.before"></a>
 ## this.before(existingFuncName, customFunc)