M2C-22619 Change elem to element

Author: ptylek

lib/web/mage/tabs.js

@@ -137,7 +137,7 @@ define([
         /**
          * Checks if element is not in nested container to keep the correct scope of collapsible
          * @param {Number} index
-         * @param {HTMLElement} elem
+         * @param {HTMLElement} element
          * @private
          * @return {Boolean}
          */