Merge branch '7.2' into 7.3

* 7.2:
  Minor fix
  Update custom_normalizer.rst

Author: javiereguiluz

serializer/custom_normalizer.rst

@@ -36,13 +36,13 @@ normalization process::
         ) {
         }
 
-        public function normalize($topic, ?string $format = null, array $context = []): array
+        public function normalize(mixed $object, ?string $format = null, array $context = []): array
         {
-            $data = $this->normalizer->normalize($topic, $format, $context);
+            $data = $this->normalizer->normalize($object, $format, $context);
 
             // Here, add, edit, or delete some data:
             $data['href']['self'] = $this->router->generate('topic_show', [
-                'id' => $topic->getId(),
+                'id' => $object->getId(),
             ], UrlGeneratorInterface::ABSOLUTE_URL);
 
             return $data;