fix(jsdoc): change type bool to boolean (#6164)

Author: 那里好脏不可以

src/components/Dropdown/Dropdown.jsx

@@ -156,7 +156,7 @@ export default class Dropdown extends Component {
   /**
    * Toggle visibility of dropdown items
    *
-   * @param {bool} state - Whether to display or hide the items
+   * @param {boolean} state - Whether to display or hide the items
    */
   _toggle(state = false) {
     this.setState({

src/utilities/test-local-storage.js

@@ -2,7 +2,7 @@
  * Test if localStorage is enabled.
  *
  * {@link https://github.com/Modernizr/Modernizr/blob/master/feature-detects/storage/localstorage.js}
- * @return {undefined|bool} Returns false on error.
+ * @return {undefined|boolean} Returns false on error.
  */
 module.exports = function () {
   const test = 'localStorageTest';