docs: prerender dynamic pages using modules (#300)

Co-authored-by: Sébastien Chopin <seb@nuxtlabs.com>

Author: onmax

docs/content/1.docs/3.recipes/3.pre-rendering.md

@@ -86,6 +86,29 @@ export default defineNuxtConfig({
 })
 ```
 
+### Using a Nuxt Module
+
+You can also use a [local Nuxt module](https://nuxt.com/docs/guide/going-further/modules) to pre-render dynamic pages, which is particularly useful if you don't have a single root page (such as `/blog`) but still need to pre-render specific routes, such as `/page-1`, `/parent/page-2`, and so on.
+
+```ts [modules/prerender-routes.ts]
+import { defineNuxtModule, addPrerenderRoutes } from '@nuxt/kit'
+
+export default defineNuxtModule({
+  meta: {
+    name: 'nuxt-prerender-routes',
+  },
+  async setup() {
+    const pages = await getDynamicPages()
+    addPrerenderRoutes(pages)
+  },
+})
+
+async function getDynamicPages(): string[] {
+  // Replace this function with the logic for retrieving the slugs for your pages.
+  return ['/page-1', '/parent/page-2']
+}
+```
+
 ## Pre-render All Pages
 
 To have the same behavior as [`nuxt generate`](https://nuxt.com/docs/api/commands/generate) while keeping the server part, you can pre-render all pages by configuring the `nitro.prerender` option in the `nuxt.config.ts`: