In IPR disclosure statement updates, don't show links to parked IPR declarations, since they will 404.

 - Legacy-Id: 17691

Author: levkowetz

ietf/templates/ipr/details_view.html

@@ -104,6 +104,8 @@ <h2>Updates</h2>
                 "{{ item.target.title }}" (which was removed at the request of the submitter)
 	      {% elif item.target.state.slug == "rejected" %}
                 "{{ item.target.title }}" (which was rejected)
+	      {% elif item.target.state.slug == "parked" %}
+                "{{ item.target.title }}"
               {% else %}
                 "<a href="{% url "ietf.ipr.views.show" id=item.target.id %}">{{ item.target.title }}</a>"
               {% endif %}