🐛 change url in config so rss feed work

Signed-off-by: Sindre Kjelsrud <kjelsrudsindre@gmail.com>

astro.config.mjs

@@ -1,11 +1,10 @@
 import { defineConfig } from 'astro/config';
 import mdx from '@astrojs/mdx';
 import sitemap from '@astrojs/sitemap';
-
 import tailwind from "@astrojs/tailwind";
 
 // https://astro.build/config
 export default defineConfig({
-  site: 'https://sindrekjelsrud.github.io',
+  site: 'https://kjelsrud.dev',
   integrations: [mdx(), sitemap(), tailwind()]
 });