docs: fix vue example

examples/nuxt-example/components/ui/pin-input/PinInputSeparator.vue

@@ -0,0 +1,15 @@
+<script setup lang="ts">
+import { Primitive, type PrimitiveProps, useForwardProps } from 'radix-vue'
+import { DashIcon } from '@radix-icons/vue'
+
+const props = defineProps<PrimitiveProps>()
+const forwardedProps = useForwardProps(props)
+</script>
+
+<template>
+  <Primitive v-bind="forwardedProps">
+    <slot>
+      <DashIcon />
+    </slot>
+  </primitive>
+</template>