update error test

modules/optimization/test/tests/misc/scaling_test/tests

@@ -27,7 +27,7 @@
       input = main.i
       max_threads = 1 # Optimize executioner does not support multiple threads
       cli_args = "MultiApps/forward/cli_args='Variables/T_real_adj/scaling=5'"
-      expect_err = 'User supplied scaling factors for adjoint variables. Adjoint system is scaled automatically by the forward system.'
+      expect_err = 'User cannot supply scaling factors for adjoint variables.   Adjoint system is scaled automatically by the forward system.'
       requirement = "The system shall throw out an error when scalings are manually assigned to "
                     "adjoint variables to remind users that no scaling will be performed for adjoint "
                     "system."