Add Production Docs Config

web/astro.config.prod.mjs

-// Full Astro Configuration API Documentation:
-// https://docs.astro.build/reference/configuration-reference
+import { defineConfig } from 'astro/config';
+import preact from '@astrojs/preact';
+import react from '@astrojs/react';
 
-// @type-check enabled!
-// VSCode and other TypeScript-enabled text editors will provide auto-completion,
-// helpful tooltips, and warnings if your exported object is invalid.
-// You can disable this by removing "@ts-check" and `@type` comments below.
-
-// @ts-check
-export default /** @type {import('astro').AstroUserConfig} */ ({
-  renderers: [
-    // Enable the Preact renderer to support Preact JSX components.
-    '@astrojs/renderer-preact',
-    // Enable the React renderer, for the Algolia search component
-    '@astrojs/renderer-react',
+// https://astro.build/config
+export default defineConfig({
+  integrations: [
+    // Enable Preact to support Preact JSX components.
+    preact(),
+    // Enable React for the Algolia search component.
+    react(),
   ],
-  buildOptions: {
-    site: 'https://project.pages.drupalcode.org/drupal_state/',
-  },
+  site: 'https://project.pages.drupalcode.org/drupal_state/',
 });