docs: migrate to nuxt compatibility 4

docs/app/pages/examples/[...slug].vue

@@ -0,0 +1,11 @@
+<script setup lang="ts">
+const route = useRoute()
+
+const name = route.params.slug[0]
+</script>
+
+<template>
+  <div class="p-4 flex flex-col justify-center h-screen overflow-auto">
+    <component :is="name" />
+  </div>
+</template>