docs(button-group): update

docs/app/components/content/examples/button-group/ButtonGroupDropdownExample.vue

@@ -0,0 +1,33 @@
+<script setup lang="ts">
+const items = [{
+  label: 'Team',
+  icon: 'i-heroicons-users'
+}, {
+  label: 'Invite users',
+  icon: 'i-heroicons-user-plus',
+  children: [{
+    label: 'Invite by email',
+    icon: 'i-heroicons-paper-airplane'
+  }, {
+    label: 'Invite by link',
+    icon: 'i-heroicons-link'
+  }]
+}, {
+  label: 'New team',
+  icon: 'i-heroicons-plus'
+}]
+</script>
+
+<template>
+  <UButtonGroup>
+    <UButton color="gray" variant="subtle" label="Settings" />
+
+    <UDropdownMenu :items="items">
+      <UButton
+        color="gray"
+        variant="outline"
+        icon="i-heroicons-chevron-down-20-solid"
+      />
+    </UDropdownMenu>
+  </UButtonGroup>
+</template>