Datepicker: Fix date format for Ukranian locale

Fixes #9939

Author: scottgonzalez

ui/i18n/datepicker-uk.js

@@ -26,7 +26,7 @@ datepicker.regional['uk'] = {
 	dayNamesShort: ['нед','пнд','вів','срд','чтв','птн','сбт'],
 	dayNamesMin: ['Нд','Пн','Вт','Ср','Чт','Пт','Сб'],
 	weekHeader: 'Тиж',
-	dateFormat: 'dd/mm/yy',
+	dateFormat: 'dd.mm.yy',
 	firstDay: 1,
 	isRTL: false,
 	showMonthAfterYear: false,