docs: fix vue example

examples/nuxt-example/components/ui/hover-card/HoverCard.vue

@@ -0,0 +1,14 @@
+<script setup lang="ts">
+import { HoverCardRoot, type HoverCardRootEmits, type HoverCardRootProps, useForwardPropsEmits } from 'radix-vue'
+
+const props = defineProps<HoverCardRootProps>()
+const emits = defineEmits<HoverCardRootEmits>()
+
+const forwarded = useForwardPropsEmits(props, emits)
+</script>
+
+<template>
+  <HoverCardRoot v-bind="forwarded">
+    <slot />
+  </HoverCardRoot>
+</template>