fix format test

Author: palukku

jabgui/src/main/java/org/jabref/gui/preferences/JabRefGuiPreferences.java

@@ -1216,7 +1216,7 @@ public DonationPreferences getDonationPreferences() {
         }
 
         donationPreferences = getDonationPreferencesFromBackingStore(DonationPreferences.getDefault());
-        
+
         EasyBind.listen(donationPreferences.neverShowAgainProperty(), (_, _, newValue) -> putBoolean(DONATION_NEVER_SHOW, newValue));
         EasyBind.listen(donationPreferences.lastShownEpochDayProperty(), (_, _, newValue) -> putInt(DONATION_LAST_SHOWN_EPOCH_DAY, newValue.intValue()));
         return donationPreferences;