docs: nuxt config groups need to be inside of robots object 🤖 (#220)

Author: dreitzner

docs/content/2.guides/3.nuxt-config.md

@@ -42,15 +42,17 @@ When targeting specific robots, you can use the `groups` option to provide granu
 ```ts [nuxt.config.ts]
 export default defineNuxtConfig({
   // add more granular rules
-  groups: [
-    // block specific robots from specific pages
-    {
-      userAgent: ['AdsBot-Google-Mobile', 'AdsBot-Google-Mobile-Apps'],
-      disallow: ['/admin'],
-      allow: ['/admin/login'],
-      comments: 'Allow Google AdsBot to index the login page but no-admin pages'
-    },
-  ]
+  robots: {
+    groups: [
+      // block specific robots from specific pages
+      {
+        userAgent: ['AdsBot-Google-Mobile', 'AdsBot-Google-Mobile-Apps'],
+        disallow: ['/admin'],
+        allow: ['/admin/login'],
+        comments: 'Allow Google AdsBot to index the login page but no-admin pages'
+      },
+    ]
+  }
 })
 ```