Datepicker: Fix day names for ar-DZ locale

Fixes #14948
Closes jquerygh-1697

Author: Amine HADDAD

ui/i18n/datepicker-ar-DZ.js

@@ -1,5 +1,7 @@
-/* Algerian Arabic Translation for jQuery UI date picker plugin. (can be used for Tunisia)*/
+/* Algerian Arabic Translation for jQuery UI date picker plugin.
+/* Used in most of Maghreb countries, primarily in Algeria, Tunisia, Morocco.
 /* Mohamed Cherif BOUCHELAGHEM -- cherifbouchelaghem@yahoo.fr */
+/* Mohamed Amine HADDAD -- zatamine@gmail.com */
 
 ( function( factory ) {
 	if ( typeof define === "function" && define.amd ) {
@@ -23,7 +25,7 @@ datepicker.regional[ "ar-DZ" ] = {
 	monthNamesShort: [ "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12" ],
 	dayNames: [ "الأحد", "الاثنين", "الثلاثاء", "الأربعاء", "الخميس", "الجمعة", "السبت" ],
 	dayNamesShort: [ "الأحد", "الاثنين", "الثلاثاء", "الأربعاء", "الخميس", "الجمعة", "السبت" ],
-	dayNamesMin: [ "الأحد", "الاثنين", "الثلاثاء", "الأربعاء", "الخميس", "الجمعة", "السبت" ],
+	dayNamesMin: [ "ح", "ن", "ث", "ر", "خ", "ج", "س" ],
 	weekHeader: "أسبوع",
 	dateFormat: "dd/mm/yy",
 	firstDay: 6,