docs: fix vue example

examples/nuxt-example/components/ui/radio-group/RadioGroupItem.vue

@@ -0,0 +1,37 @@
+<script setup lang="ts">
+import { type HTMLAttributes, computed } from 'vue'
+import {
+  RadioGroupIndicator,
+  RadioGroupItem,
+  type RadioGroupItemProps,
+  useForwardProps,
+} from 'radix-vue'
+import { CheckIcon } from '@radix-icons/vue'
+import { cn } from '@/lib/utils'
+
+const props = defineProps<RadioGroupItemProps & { class?: HTMLAttributes['class'] }>()
+
+const delegatedProps = computed(() => {
+  const { class: _, ...delegated } = props
+
+  return delegated
+})
+
+const forwardedProps = useForwardProps(delegatedProps)
+</script>
+
+<template>
+  <RadioGroupItem
+    v-bind="forwardedProps"
+    :class="
+      cn(
+        'aspect-square h-4 w-4 rounded-full border border-primary text-primary shadow focus:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50',
+        props.class,
+      )
+    "
+  >
+    <RadioGroupIndicator class="flex items-center justify-center">
+      <CheckIcon class="h-3.5 w-3.5 fill-primary" />
+    </RadioGroupIndicator>
+  </RadioGroupItem>
+</template>