fix(docs): update custom doctrine ORM extension example (#1761)

Author: samnela

core/extensions.md

@@ -60,6 +60,7 @@ namespace App\Doctrine;
 use ApiPlatform\Doctrine\Orm\Extension\QueryCollectionExtensionInterface;
 use ApiPlatform\Doctrine\Orm\Extension\QueryItemExtensionInterface;
 use ApiPlatform\Doctrine\Orm\Util\QueryNameGeneratorInterface;
+use ApiPlatform\Metadata\Operation;
 use App\Entity\Offer;
 use Doctrine\ORM\QueryBuilder;
 use Symfony\Component\Security\Core\Security;
@@ -73,12 +74,12 @@ final class CurrentUserExtension implements QueryCollectionExtensionInterface, Q
         $this->security = $security;
     }
 
-    public function applyToCollection(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, string $operationName = null): void
+    public function applyToCollection(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, Operation $operation = null, array $context = []): void
     {
         $this->addWhere($queryBuilder, $resourceClass);
     }
 
-    public function applyToItem(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, array $identifiers, string $operationName = null, array $context = []): void
+    public function applyToItem(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, array $identifiers, Operation $operation = null, array $context = []): void
     {
         $this->addWhere($queryBuilder, $resourceClass);
     }