fix: docker-support.md (#1052)

* Update docker-support.md

Fixed the broken Docker file link that was mentioned in nginx/agent#1087
(Issue #1087)

* Apply suggestion from @mjang

---------

Co-authored-by: Mike Jang <[email protected]>

Author: cs168898

content/agent/installation-upgrade/container-environments/docker-support.md

@@ -10,7 +10,7 @@ nd-content-type:
 
 ## Overview
 
-The NGINX Agent repository includes [Dockerfiles](https://github.com/nginx/agent/tree/main/scripts/docker) that can be used to [build custom container images]({{< ref "/agent/installation-upgrade/container-environments/docker-images.md" >}}). Images are created with an NGINX Open Source or NGINX Plus instance and are available for various operating systems.
+The NGINX Agent repository includes [Dockerfiles](https://github.com/nginx/agent/tree/dev-v2/test/docker) that can be used to [build custom container images]({{< ref "/agent/installation-upgrade/container-environments/docker-images.md" >}}). Images are created with an NGINX Open Source or NGINX Plus instance and are available for various operating systems.
 
 See the [Technical Specifications]({{< ref "/agent/technical-specifications.md" >}}) for a list of supported operationg systems.