Merge branch '6.2' into 6.3

* 6.2:
  enable_annotations is enabled by default

Author: javiereguiluz

reference/configuration/framework.rst

@@ -2536,7 +2536,7 @@ settings is configured.
 enable_annotations
 ..................
 
-**type**: ``boolean`` **default**: ``false``
+**type**: ``boolean`` **default**: ``true``
 
 If this option is enabled, validation constraints can be defined using annotations or attributes.
 
@@ -2744,7 +2744,7 @@ Whether to enable the ``serializer`` service or not in the service container.
 enable_annotations
 ..................
 
-**type**: ``boolean`` **default**: ``false``
+**type**: ``boolean`` **default**: ``true``
 
 If this option is enabled, serialization groups can be defined using annotations or attributes.