Add blog link

Author: Adam Dupaski

content/en/docs/releasenotes/studio-pro/9/9.13.md

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 {{% modelerdownloadlink "9.13.0" %}}
 
+{{% alert color="info" %}}For more information on this release, see the [Mendix 9.13 Release – Improvements Everywhere](https://www.mendix.com/blog/mendix-9-13-release-improvements-everywhere/) blog post.{{% /alert %}}
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 ### New Features
 
 * In published OData services, you can now allow clients to [delete objects](/refguide/published-odata-resource/#deletable). This is off by default. When this feature is switched on, entity access applies, so only clients with the right credentials are allowed to delete.