docs improvements

docs/attributes.md

@@ -194,7 +194,6 @@ In the following example we create our own a `#[Route]` attribute that implement
 annotate methods with it inside a `Controller` class.
 
 ```php
-#[\Attribute]
 use Aura\Di\AttributeConfigInterface;
 use Aura\Di\Container;
 use Aura\Di\Injection\Lazy;