docs/CRACO example: Match project code style

Co-authored-by: Titus <tituswormer@gmail.com>

docs/docs/getting-started.server.mdx

@@ -516,16 +516,15 @@ rewiring tool, such as [CRACO](http://github.com/gsoft-inc/craco).
   <summary>Expand CRACO example</summary>
 
   ```js path="craco.config.js"
-  const { addAfterLoader, loaderByName } = require('@craco/craco')
+  const {addAfterLoader, loaderByName} = require('@craco/craco')
 
   module.exports = {
     webpack: {
-      configure: (webpackConfig) => {
+      configure(webpackConfig) {
         addAfterLoader(webpackConfig, loaderByName('babel-loader'), {
-          test: /\.(md|mdx)$/,
+          test: /\.mdx?$/,
           loader: require.resolve('@mdx-js/loader')
         })
-
         return webpackConfig
       }
     }