docs(menu): fix limit type (algolia#2902)

src/widgets/menu/menu.js

@@ -130,7 +130,7 @@ menu({
  *
  * You can also use a sort function that behaves like the standard Javascript [compareFunction](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort#Syntax).
  * @property {MenuTemplates} [templates] Customize the output through templating.
- * @property {string} [limit=10] How many facets values to retrieve.
+ * @property {number} [limit=10] How many facets values to retrieve.
  * @property {boolean|MenuShowMoreOptions} [showMore=false] Limit the number of results and display a showMore button.
  * @property {MenuShowMoreTemplates} [templates] Templates to use for the widget.
  * @property {MenuTransforms} [transformData] Set of functions to update the data before passing them to the templates.