versioning example for linuxserver/openssh-server in docs does not work

First, read the Renovate minimal reproduction instructions.

Current behavior

Renovate will create a PR for updating the image version in compose.yml, but not for openssh-deployment.yaml.

Expected behavior

Renovate should create a PR for updating the image version in both files.

Link to the Renovate issue or Discussion

This reproduction repo relates to discussion renovatebot/renovate#33024