Upgrade docs

docs/next.config.ts

@@ -0,0 +1,19 @@
+import nextra from "nextra";
+
+const withNextra = nextra({
+  defaultShowCopyCode: true,
+});
+
+export default withNextra({
+  output: "export",
+  transpilePackages: ["geist"],
+  images: {
+    unoptimized: true,
+    remotePatterns: [
+      {
+        protocol: "https",
+        hostname: "raw.githubusercontent.com",
+      },
+    ],
+  },
+});