Corrected JS comment typos.

src/assets/js/backend_customers.js

@@ -21,7 +21,7 @@ var BackendCustomers = {
      * The page helper contains methods that implement each record type functionality
      * (for now there is only the CustomersHelper).
      *
-     * @type {object{
+     * @type {object}
      */
     helper: {},
 

src/assets/js/general_functions.js

@@ -369,7 +369,7 @@ var GeneralFunctions = {
     /**
      * Format a given date according to the date format setting.
      *
-     * @param {Date]} date The date to be formatted.
+     * @param {Date} date The date to be formatted.
      * @param {string} dateFormatSetting The setting provided by PHP must be one of
      * the "DMY", "MDY" or "YMD".
      * @param {bool} addHours (optional) Whether to add hours to the result.