Use $ instead of jQuery.

Signed-off-by: XhmikosR <xhmikosr@gmail.com>

scripts/pi-hole/js/ip-address-sorting.js

@@ -5,9 +5,9 @@
  *  This file is copyright under the latest version of the EUPL.
  *  Please see LICENSE file for your rights under this license.  */
 
-// This code has been taken from
+// This code has been adapted from
 // https://datatables.net/plug-ins/sorting/ip-address
-jQuery.extend(jQuery.fn.dataTableExt.oSort, {
+$.extend($.fn.dataTableExt.oSort, {
   "ip-address-pre": function (a) {
     if (!a) {
       return 0;