Apply suggestion to test/test_dialog_wrappers.py

test/test_dialog_wrappers.py

 """Test functions in test_dialog_wrappers.py.
 
-Tests are performed by launchinig the dialogs and inspecting their icons. To
+Tests are performed by launching the dialogs and inspecting their icons. To
 test the dialogs we need to 'load' our testing function using
 QTimer.singleShot before starting the widget. This will in practice let us run
 our code after the dialog started, even though it is modal.