fix(settings): Emit correct signal when spellchecking is updated

src/persistence/settings.cpp

@@ -1084,7 +1084,7 @@ void Settings::setSpellCheckingEnabled(bool newValue)
 
     if (newValue != spellCheckingEnabled) {
         spellCheckingEnabled = newValue;
-        emit statusChangeNotificationEnabledChanged(statusChangeNotificationEnabled);
+        emit spellCheckingEnabledChanged(spellCheckingEnabled);
     }
 }