Add & use src/config.mjs file

astro.config.mjs

@@ -1,20 +1,23 @@
 import { defineConfig } from "astro/config";
+
 import tailwind from "@astrojs/tailwind";
 import sitemap from "@astrojs/sitemap";
-
 import image from "@astrojs/image";
 
+import { SITE } from "./src/config.mjs";
+
 // https://astro.build/config
 export default defineConfig({
   // Astro uses this full URL to generate your sitemap and canonical URLs in your final build
-  site: "https://astrowind.vercel.app/",
+  site: SITE.domain,
+
   integrations: [
     tailwind({
       config: {
         applyBaseStyles: false,
       },
     }),
-    sitemap({}),
+    sitemap(),
     image(),
   ],
 });