app_python: update api calls: s/MODULE_T/MODULE2_T

MODULE_T was obsoleted by recent core changes. It was replaced by
MODULE0_T, MODULE1_T and MODULE2_T

modules/app_python/python_msgobj.c

@@ -219,7 +219,7 @@ msg_call_function(msgobject *self, PyObject *args)
         return Py_None;
     }
 
-    act = mk_action(MODULE_T, 4 /* number of (type, value) pairs */,
+    act = mk_action(MODULE2_T, 4 /* number of (type, value) pairs */,
                     MODEXP_ST, fexport, /* function */
                     NUMBER_ST, 2,       /* parameter number */
                     STRING_ST, arg1,    /* param. 1 */