GitLab registry certificate key cannot be specified, even though the docs say it can be

Summary

The documentation suggests that a custom secret key can be used for the GitLab registry certificate.

but, it can't.

https://gitlab.com/gitlab-org/charts/gitlab/-/blob/53963b20ed71de861325f8f45e7d1290227d4c38/charts/registry/templates/deployment.yaml#L175-179

Steps to reproduce

N/A

Configuration used

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Current behavior

(What you're experiencing happening)

Expected behavior

(What you're expecting to happen)

Versions

• Chart: (tagged version | branch | hash git rev-parse HEAD)
• Platform:
  • Cloud: (GKE | AKS | EKS | ?)
  • Self-hosted: (OpenShift | Minikube | Rancher RKE | ?)
• Kubernetes: (kubectl version)
  • Client:
  • Server:
• Helm: (helm version)
  • Client:
  • Server:

Relevant logs

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