fixup

Author: HeahDude

reference/forms/types/options/choice_attr.rst.inc

@@ -32,7 +32,6 @@ If an array, the keys of the ``choices`` array must be used as keys::
 
         use App\Entity\Category;
         use Symfony\Component\Form\ChoiceList\ChoiceList;
-        use Symfony\Component\Form\ChoiceList\ChoiceList;
 
         // ...
         $builder->add('choices', ChoiceType::class, [

reference/forms/types/options/choice_loader.rst.inc

@@ -3,9 +3,10 @@ choice_loader
 
 **type**: :class:`Symfony\\Component\\Form\\ChoiceList\\Loader\\ChoiceLoaderInterface`
 
-The ``choice_loader`` can be used to only partially load the choices in cases where
-a fully-loaded list is not necessary. This is only needed in advanced cases and
-would replace the ``choices`` option.
+The ``choice_loader`` can be used instead of ``choices`` option. It allows to
+create a list lazily or partially when fetching only the choices for a set of
+submitted values (i.e. querying a search engine like ``ElasticSearch`` can be
+a heavy process).
 
 You can use an instance of :class:`Symfony\\Component\\Form\\ChoiceList\\Loader\\CallbackChoiceLoader`
 if you want to take advantage of lazy loading::