Update articles-model.rst

there is no 'tags' at this point of the tutorial. In the database creation, 'tags' isn't directly linked to 'articles'.

Author: yosus

en/tutorials-and-examples/cms/articles-model.rst

@@ -65,7 +65,6 @@ look like this::
             'created' => true,
             'modified' => true,
             'users' => true,
-            'tags' => true,
         ];
     }