Refs #21099: Add example to versions

Signed-off-by: eduponz <eduardoponz@eprosima.com>

versions.md

@@ -42,6 +42,7 @@ Forthcoming
  * Hello world example with wait-sets and environment XML profiles.
  * Configuration example that condenses multiple QoS examples. Multiple configurations allowed through argument parsing.
  * Custom payload pool example that uses a user-defined payload pool instead of the default
+ * X-Types example with dynamic type discovery and Hello world example compatibility.
 * Removed `TypeConsistencyQos` from DataReader, and included `TypeConsistencyEnforcementQosPolicy` and `DataRepresentationQosPolicy`
 * Added new `flow_controller_descriptor_list` XML configuration, remove `ThroughtputController`.
 * Migrate `#define`s within `BuiltinEndpoints.hpp` to namespaced `constexpr` variables.