component architecture

Author: WebMamba

ux.symfony.com/cookbook/component_architecture.md

@@ -43,12 +43,10 @@ Or you can make composition with the following syntax:
 
 ```twig
 <twig:Card>
-    <twig:CardHeader>
-        <h2>My Card</h2>
-    </twig:CardHeader>
-    <twig:CardBody>
-        <p>This is the content of my card.</p>
-    </twig:CardBody>
+    <twig:Icon name="info"/>
+    <twig:Button>
+        <twig:Icon name="close" />
+    </twig:Button>
 </twig:Card>
 ```