fix: on_wizard method should be _init

[PinkShnack]

As in the title. When I install 1.1.0 I get the error

Unhandled exception in DCOR-Aid version 1.1.0:
Traceback (most recent call last):
  File "DCOR-AidLauncher.py", line 4, in <module>
  File "dcoraid\__main__.py", line 50, in main
    window = DCORAid()
  File "dcoraid\gui\main.py", line 137, in __init__
    self.on_wizard()
AttributeError: 'DCORAid' object has no attribute 'on_wizard'

[paulmueller]

Thanks ❤️ , initial startup apparently is not sufficiently tested yet.