docs: fix vue example

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

@@ -0,0 +1,25 @@
+<script setup lang="ts">
+import { type HTMLAttributes, computed } from 'vue'
+import { RadioGroupRoot, type RadioGroupRootEmits, type RadioGroupRootProps, useForwardPropsEmits } from 'radix-vue'
+import { cn } from '@/lib/utils'
+
+const props = defineProps<RadioGroupRootProps & { class?: HTMLAttributes['class'] }>()
+const emits = defineEmits<RadioGroupRootEmits>()
+
+const delegatedProps = computed(() => {
+  const { class: _, ...delegated } = props
+
+  return delegated
+})
+
+const forwarded = useForwardPropsEmits(delegatedProps, emits)
+</script>
+
+<template>
+  <RadioGroupRoot
+    :class="cn('grid gap-2', props.class)"
+    v-bind="forwarded"
+  >
+    <slot />
+  </RadioGroupRoot>
+</template>