Fix linter errors

Author: arnaud-zurawczak

doc/fields/AssociationField.rst

@@ -139,7 +139,7 @@ to allow HTML rendering::
 
 By default, to-one associations link to the ``detail`` page of the related entity
 and to-many associations are rendered as a plain badge with a count. Use this
-option to replace that behaviour with a custom URL.
+option to replace that behavior with a custom URL.
 
 Pass a static string when the URL is known at configuration time::
 

src/Field/Configurator/AssociationConfigurator.php

@@ -217,7 +217,7 @@ public function configure(FieldDto $field, EntityDto $entityDto, AdminContext $c
         }
 
         $url = $field->getCustomOption(AssociationField::OPTION_URL);
-        if (is_callable($url)) {
+        if (\is_callable($url)) {
             $url = $url($entityDto, $context);
             $field->setCustomOption(AssociationField::OPTION_URL, $url);
         }

tests/Unit/Field/Configurator/AssociationConfiguratorTest.php

@@ -257,7 +257,7 @@ public function testLinkToUrl(): void
     public function testLinkToUrlCallable(): void
     {
         $field = $this->buildLeadDeveloperField()
-            ->linkToUrl(function(EntityDto $entityDto, AdminContextInterface $context) {
+            ->linkToUrl(static function(EntityDto $entityDto, AdminContextInterface $context) {
                 return sprintf('https://example.com/%s/%s', $context->getRequest()->getLocale(), $entityDto->getName());
             })
         ;