Update retirement.py (#3500)

* Upd:[TW]Event assets (#3479)

* Upd:[TW]war_archives assets (#3490)

* Update retirement.py

选择更换任意白皮航母时，能够正确保留退役

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Co-authored-by: RilyLC <94281898+RilyLC@users.noreply.github.com>

module/retire/retirement.py

@@ -468,7 +468,7 @@ class Retirement(Enhancement, QuickRetireSettingHandler):
                                   color=button.color,
                                   name=f'TEMPLATE_{common_cv_name}_RETIRE')
 
-                return None
+            return None
         else:
 
             template = globals()[