chore: add blog post to learn more section of settings management (#22792)

## Description
- Request from Product and Marketing, add blog post under "Learn more"
heading for Settings Management guide

## Related issues or tickets
https://docker.atlassian.net/browse/ENGDOCS-2697

## Reviews
- [ ] Technical review
- [ ] Editorial review
- [ ] Product review

Author: sarahsanders-docker

content/manuals/security/for-admins/hardened-desktop/settings-management/_index.md

@@ -81,4 +81,5 @@ Desktop Linux VM.
 
 ## Learn more
 
-To see how each Docker Desktop setting maps across the Docker Dashboard, `admin-settings.json` file, and Admin Console, see the [Settings reference](settings-reference.md).
+- To see how each Docker Desktop setting maps across the Docker Dashboard, `admin-settings.json` file, and Admin Console, see the [Settings reference](settings-reference.md).
+- Read the [Settings Management blog post](https://www.docker.com/blog/settings-management-for-docker-desktop-now-generally-available-in-the-admin-console/).