Update docs

docs/components/form.md

@@ -6,7 +6,7 @@ Forms collect data that can easily be processed and sent to a server.
 
 All Shoelace components make use of a [shadow DOM](https://developer.mozilla.org/en-US/docs/Web/Web_Components/Using_shadow_DOM) to encapsulate markup, styles, and behavior. One caveat of this approach is that native `<form>` elements will not recognize Shoelace form controls.
 
-This component solves that problem by serializing _both_ Shoelace form controls and native form controls when the form is submitted. The resulting form data is exposed in the `slSubmit` event as a [`FormData`](https://developer.mozilla.org/en-US/docs/Web/API/FormData) object.
+This component solves that problem by serializing _both_ Shoelace form controls and native form controls when the form is submitted. The resulting form data is exposed in the `slSubmit` event as a [`FormData`](https://developer.mozilla.org/en-US/docs/Web/API/FormData) object in `event.detail.formData`. You can also find an array of form controls in `event.detail.formControls`.
 
 Shoelace forms don't make use of `action` and `method` attributes and they don't submit the same was as native forms. To handle submission, you need to listen for the `slSubmit` event as shown in the example below and make an XHR request with the resulting form data.