Minor tweak

Author: javiereguiluz

form/form_collections.rst

@@ -105,9 +105,9 @@ Then, create a form class so that a ``Tag`` object can be modified by the user::
     }
 
 Next, let's create a form for the ``Task`` entity, using a
-:doc:`CollectionType </reference/forms/types/collection>` field of
-``TagType`` forms. This will allow us to modify the ``Tag``s of a
-``Task`` right inside the task form itself::
+:doc:`CollectionType </reference/forms/types/collection>` field of ``TagType``
+forms. This will allow us to modify all the ``Tag`` elements of a ``Task`` right
+inside the task form itself::
 
     // src/AppBundle/Form/TaskType.php
     namespace AppBundle\Form;