update vim.guide to Next 15 to fix deploys

Author: chantastic

vim.guide/components/letter.js

@@ -10,7 +10,7 @@ export default ({ letter, code, ...props }) => (
     <section>
       <h1>Append with {letter}</h1>
       <Link href="/">
-        <a>Go Home</a>
+        Go Home
       </Link>
       <YouTube code={code} />
 

vim.guide/next.config.js

@@ -1,3 +1,5 @@
-const withCSS = require("@zeit/next-css");
+const nextConfig = {
+	/* config options here */
+}
 
-module.exports = withCSS();
+module.exports = nextConfig