docs: update postgres

Author: atinux

docs/content/1.docs/3.recipes/5.postgres.md

@@ -20,7 +20,7 @@ If you prefer to use Cloudflare services, you can use Cloudflare D1 which is bui
 
 ```ts [nuxt.config.ts]
 export default defineNuxtConfig({
-  modules: ['@nuxthub/core',],
+  modules: ['@nuxthub/core'],
 });
 ```