docs: improve forms usage with examples

docs/content/3.forms/7.toggle.md

@@ -8,7 +8,22 @@ headlessui:
 
 ## Usage
 
-::component-card
+Use a `v-model` to make the Toggle reactive.
+
+::component-example
+#default
+:toggle-example
+
+#code
+```vue
+<script setup>
+const selected = ref(false)
+</script>
+
+<template>
+  <UToggle v-model="selected" />
+</template>
+```
 ::
 
 ### Icon