replace _octave with _exe in tests

Author: SarahAlidoost

tests/test_stemmus_scope.py

@@ -248,7 +248,7 @@ def test_run_matlab(self, mocked_popen, model_with_setup, tmp_path):
         result = model.run()
 
         path_to_config = f"'{actual_cfg_file}'"
-        command_line = f'octave --eval "STEMMUS_SCOPE_octave({path_to_config});exit;"'
+        command_line = f'octave --eval "STEMMUS_SCOPE_exe({path_to_config});exit;"'
         expected = [command_line, "--no-gui", "--silent"]
 
         mocked_popen.assert_called_with(