docs: use require instead of import in medusa-config.js (#9102)

Co-authored-by: Carlos R. L. Rodrigues <37986729+carlos-r-l-rodrigues@users.noreply.github.com>

www/apps/resources/app/commerce-modules/auth/module-options/page.mdx

@@ -21,7 +21,7 @@ When the Medusa application starts, these providers are registered and can be us
 For example:
 
 ```js title="medusa-config.js"
-import { Modules } from "@medusajs/utils"
+const { Modules } = require("@medusajs/utils")
 
 // ...