Update bug tracker URLs.

plug-ins/help/help.c

@@ -336,7 +336,7 @@ help_load_idle (gpointer data)
 
           procedure   = pika_pdb_lookup_procedure (pika_get_pdb (),
                                                    idle_help->procedure);
-          return_vals = pika_procedure_run (procedure, "domain-names", uri, NULL);
+          return_vals = pika_procedure_run (procedure, "url", uri, NULL);
           pika_value_array_unref (return_vals);
 
           g_free (uri);