Merge branch 'docs-link-blob-unknown-troubleshooting-to-issue-209008' into 'master'

Link to "Blob unknown to registry" troubleshooting to issue 209008

See merge request gitlab-org/gitlab!56634

doc/user/packages/container_registry/index.md

@@ -712,7 +712,7 @@ For information on how to update your images, see the [Docker help](https://docs
 
 ### `Blob unknown to registry` error when pushing a manifest list
 
-When [pushing a Docker manifest list](https://docs.docker.com/engine/reference/commandline/manifest/#create-and-push-a-manifest-list) to the GitLab Container Registry, you may receive the error `manifest blob unknown: blob unknown to registry`. This issue occurs when the individual child manifests referenced in the manifest list were not pushed to the same repository.
+When [pushing a Docker manifest list](https://docs.docker.com/engine/reference/commandline/manifest/#create-and-push-a-manifest-list) to the GitLab Container Registry, you may receive the error `manifest blob unknown: blob unknown to registry`. [This issue](https://gitlab.com/gitlab-org/gitlab/-/issues/209008) occurs when the individual child manifests referenced in the manifest list were not pushed to the same repository.
 
 For example, you may have two individual images, one for `amd64` and another for `arm64v8`, and you want to build a multi-arch image with them. The `amd64` and `arm64v8` images must be pushed to the same repository where you want to push the multi-arch image.