docs: fix vue example

examples/nuxt-example/components/ui/menubar/MenubarRadioGroup.vue

@@ -0,0 +1,20 @@
+<script setup lang="ts">
+import {
+  MenubarRadioGroup,
+  type MenubarRadioGroupEmits,
+  type MenubarRadioGroupProps,
+  useForwardPropsEmits,
+} from 'radix-vue'
+
+const props = defineProps<MenubarRadioGroupProps>()
+
+const emits = defineEmits<MenubarRadioGroupEmits>()
+
+const forwarded = useForwardPropsEmits(props, emits)
+</script>
+
+<template>
+  <MenubarRadioGroup v-bind="forwarded">
+    <slot />
+  </MenubarRadioGroup>
+</template>