docs(demos): update the Option demo to use the Select demo

src/components/option/option.ts

@@ -7,7 +7,7 @@ import { isPresent, isTrueProperty } from '../../util/util';
  * @description
  * `ion-option` is a child component of `ion-select`. Similar to the native option element, `ion-option` can take a value and a selected property.
  *
- * @demo /docs/v2/demos/item-sliding/
+ * @demo /docs/v2/demos/select/
  */
 @Directive({
   selector: 'ion-option'