Fixes #20234: Correct add_button return_url (#20268)

netbox/templates/inc/missing_prerequisites.html

@@ -10,7 +10,7 @@
       {% endblocktrans %}
     </div>
     <div>
-      {% add_button prerequisite_model request.path %}
+      {% add_button prerequisite_model return_url=request.path %}
     </div>
   </div>
 </div>