docs: fix incorrect JSDoc annotation in combo-box-scroller-mixin (#9985)

Author: web-padawan

packages/combo-box/src/vaadin-combo-box-scroller-mixin.d.ts

@@ -45,8 +45,7 @@ export declare class ComboBoxScrollerMixinClass<TItem, TOwner> {
   owner: TOwner;
 
   /**
-   * Set true to prevent the overlay from opening automatically.
-   * @attr {boolean} auto-open-disabled
+   * Function used to render the content of every combo-box item.
    */
   renderer: ComboBoxItemRenderer<TItem, TOwner> | null | undefined;