Update serialization.md (#1552)

Bizley · web-flow · commit 9383470b43ba · 2022-05-25T00:21:47.000+02:00
diff --git a/core/serialization.md b/core/serialization.md
@@ -697,7 +697,7 @@ class Book
     /**
      * This field can be managed only by an admin
      */
-    #[Groups(["book:output", "admin:input"}])]
+    #[Groups(["book:output", "admin:input"])]
     public bool $active = false;
 
     /**
