Update src/librustdoc/html/static/js/storage.js

Co-authored-by: León Orell Valerian Liehr <me@fmease.dev>

Author: notriddle

src/librustdoc/html/static/js/storage.js

@@ -85,7 +85,7 @@ function removeClass(elem, className) {
 /**
  * Run a callback for every element of an Array.
  * @param {Array<?>}                       arr  - The array to iterate over
- * @param {function(?): boolean|undefined|void} func - The callback
+ * @param {function(?): boolean|void} func - The callback
  */
 function onEach(arr, func) {
     for (const elem of arr) {