D404: fix

pkgs/clan-vm-manager/clan_vm_manager/app.py

@@ -23,7 +23,7 @@ log = logging.getLogger(__name__)
 
 
 class MainApplication(Adw.Application):
-    """This class is initialized  every time the app is started
+    """Initialized  every time the app is started.
     Only the Adw.ApplicationWindow is a singleton.
     So don't use any singletons  in the Adw.Application class.
     """

pkgs/clan-vm-manager/clan_vm_manager/singletons/use_join.py

@@ -46,7 +46,7 @@ class JoinValue(GObject.Object):
 
 
 class JoinList:
-    """This is a singleton.
+    """Singleton class.
     It is initialized with the first call of use()
     """
 

pkgs/clan-vm-manager/clan_vm_manager/singletons/use_views.py

@@ -8,7 +8,7 @@ from gi.repository import Adw
 
 
 class ViewStack:
-    """This is a singleton.
+    """Singleton class.
     It is initialized with the first call of use()
 
     Usage: