docs: fix vue example

examples/nuxt-example/components/ui/number-field/NumberFieldContent.vue

@@ -0,0 +1,14 @@
+<script setup lang="ts">
+import type { HTMLAttributes } from 'vue'
+import { cn } from '@/lib/utils'
+
+const props = defineProps<{
+  class?: HTMLAttributes['class']
+}>()
+</script>
+
+<template>
+  <div :class="cn('relative [&>[data-slot=input]]:has-[[data-slot=increment]]:pr-5 [&>[data-slot=input]]:has-[[data-slot=decrement]]:pl-5', props.class)">
+    <slot />
+  </div>
+</template>