docs: fix vue example

examples/nuxt-example/components/ui/auto-form/AutoFormLabel.vue

@@ -0,0 +1,14 @@
+<script setup lang="ts">
+import { FormLabel } from '@/components/ui/form'
+
+defineProps<{
+  required?: boolean
+}>()
+</script>
+
+<template>
+  <FormLabel>
+    <slot />
+    <span v-if="required" class="text-destructive"> *</span>
+  </FormLabel>
+</template>