Update src/content/docs/google-tag-gateway/index.mdx

Co-authored-by: ToriLindsay <[email protected]>

Author: kathayl

src/content/docs/google-tag-gateway/index.mdx

@@ -39,6 +39,6 @@ The [Google tag ID](https://support.google.com/analytics/answer/9539598?hl=en) c
 
 Now that you have authenticated into your Cloudflare account and configured GTM in first-party mode, your Google Tags will be loaded using `https://your-domain/measurement-path/...`and subsequent measurement requests will be served by Cloudflare.
 
-## Related resource
+## Related resources
 - [Google Developer Docs: Set up Google tag gateway for advertisers](https://developers.google.com/tag-platform/tag-manager/gateway/setup-guide?setup=auto)
 - [Google Tag Manager Help: Set up Google tag gateway for advertisers in the Google tag with Cloudflare](https://support.google.com/tagmanager/answer/16061406)