cs fix

Author: garak

src/DependencyInjection/Configuration.php

@@ -52,7 +52,7 @@ public function getConfigTreeBuilder(): TreeBuilder
                 ->scalarNode('page_limit')
                 ->defaultNull()
                 ->validate()
-                    ->ifTrue(static fn (mixed $v): bool => null !== $v && !is_int($v))
+                    ->ifTrue(static fn (mixed $v): bool => null !== $v && !\is_int($v))
                     ->thenInvalid('The page_limit must be an integer or null.')
                 ->end()
                 ->beforeNormalization()