dean updating noindex section (#356)

Author: dino475

settings/seo.mdx

@@ -61,4 +61,12 @@ Only pages included in your `mint.json` are included by default. To include hidd
 "seo": {
     "indexHiddenPages": true
 }
+```
+
+## Disabling indexing
+If you want to stop a page from being indexed by search engines, you can include the following in the [frontmatter](/page) of your page:
+```
+---
+noindex: true
+---
 ```