Fix style of changelogs/readmes

Author: nicolas-grekas

CHANGELOG.md

@@ -4,10 +4,10 @@ CHANGELOG
 5.3
 ---
 
-* Add a new `markAsPublic` method on `NotificationEmail` to change the `importance` context option to null after creation
-* Add a new `fragment_uri()` helper to generate the URI of a fragment
-* Add support of Bootstrap 5 for form theming
-* Add a new `serialize` filter to serialize objects using the Serializer component
+ * Add a new `markAsPublic` method on `NotificationEmail` to change the `importance` context option to null after creation
+ * Add a new `fragment_uri()` helper to generate the URI of a fragment
+ * Add support of Bootstrap 5 for form theming
+ * Add a new `serialize` filter to serialize objects using the Serializer component
 
 5.2.0
 -----