FIx a silly typo

gui/mainFrame.py

@@ -117,7 +117,7 @@ class MainFrame(wx.Frame):
 
     def ExitApp(self, evt):
         try:
-            service.Settings.getInstance().saveAll()
+            service.SettingsProvider.getInstance().saveAll()
             self.Close()
         except PyDeadObjectError:
             pass

service/__init__.py

@@ -3,4 +3,4 @@ from service.fit import Fit
 from service.attribute import Attribute
 from service.character import Character
 from service.damagePattern import DamagePattern
-from service.settings import Settings
+from service.settings import SettingsProvider