Added _ to waitForElement function name

Author: gooddaytoday

src/util/waitForElement.js

@@ -1,9 +1,12 @@
 /**
  * Waits until Element will appear
+ *
+ * @api private
+ * @method _waitForElement
  * @param {string} elSelector Selector to locate Element
  * @param {() => void} callback Callback to be called after Element appearance
  */
-export default function waitForElement(elSelector, callback) {
+export default function _waitForElement(elSelector, callback) {
   if (document.querySelector(elSelector) !== null) {
     callback();
     return;