docs: fix vue example

examples/nuxt-example/components/ui/dropdown-menu/DropdownMenuCheckboxItem.vue

@@ -0,0 +1,40 @@
+<script setup lang="ts">
+import { type HTMLAttributes, computed } from 'vue'
+import {
+  DropdownMenuCheckboxItem,
+  type DropdownMenuCheckboxItemEmits,
+  type DropdownMenuCheckboxItemProps,
+  DropdownMenuItemIndicator,
+  useForwardPropsEmits,
+} from 'radix-vue'
+import { CheckIcon } from '@radix-icons/vue'
+import { cn } from '@/lib/utils'
+
+const props = defineProps<DropdownMenuCheckboxItemProps & { class?: HTMLAttributes['class'] }>()
+const emits = defineEmits<DropdownMenuCheckboxItemEmits>()
+
+const delegatedProps = computed(() => {
+  const { class: _, ...delegated } = props
+
+  return delegated
+})
+
+const forwarded = useForwardPropsEmits(delegatedProps, emits)
+</script>
+
+<template>
+  <DropdownMenuCheckboxItem
+    v-bind="forwarded"
+    :class=" cn(
+      'relative flex cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50',
+      props.class,
+    )"
+  >
+    <span class="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
+      <DropdownMenuItemIndicator>
+        <CheckIcon class="w-4 h-4" />
+      </DropdownMenuItemIndicator>
+    </span>
+    <slot />
+  </DropdownMenuCheckboxItem>
+</template>