fix: 后端代码格式化

docs/next.config.mjs

@@ -1,10 +1,10 @@
-import { createMDX } from 'fumadocs-mdx/next';
+import { createMDX } from "fumadocs-mdx/next";
 
 const withMDX = createMDX();
 
 /** @type {import('next').NextConfig} */
 const config = {
-  output: 'export',
+  output: "export",
   reactStrictMode: true,
 };