fix: [RP] faulty PE links

docs/en/relying-party-solution.rst

@@ -379,7 +379,7 @@ Here a non-normative example of ``presentation_definition``:
 
   The following parameters, even if defined in [OID4VP], are not mentioned in the previous non-normative example, since their usage is conditional and may change in future release of this documentation.
 
-  - ``presentation_definition``: JSON object according to `Presentation Exchange <PresentationExch>`_. This parameter MUST not be present when ``presentation_definition_uri`` or ``scope`` are present.
+  - ``presentation_definition``: JSON object according to `Presentation Exchange <https://identity.foundation/presentation-exchange/spec/v2.0.0/>`_. This parameter MUST not be present when ``presentation_definition_uri`` or ``scope`` are present.
   - ``presentation_definition_uri``: string containing an HTTPS URL pointing to a resource where a Presentation Definition JSON object can be retrieved. This parameter MUST be present when ``presentation_definition parameter`` or a ``scope`` value representing a Presentation Definition is not present.
   - ``client_metadata``: A JSON object containing the Verifier metadata values. The ``client_metadata`` parameter MUST NOT be present when ``client_id_scheme`` is ``entity_id``. The ``client_metadata`` is taken from ``trust_chain``.
   - ``client_metadata_uri``: string containing an HTTPS URL pointing to a resource where a JSON object with the Verifier metadata can be retrieved. The ``client_metadata_uri`` parameter MUST NOT be present when ``client_id_scheme`` is ``entity_id``.