Broken OS image link in Quick Start template file

[sp-yduck]

/kind bug

What steps did you take and what happened:
This link is broken (returns 404)
https://github.com/sp-yduck/cluster-api-provider-proxmox/blob/618878af1a6e423a8456d576887f31e8055ef5e5/templates/cluster-template.yaml#L154

What did you expect to happen:
it should use not broken link and should not become broken link in the future as well

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Cluster-api-provider-proxmox version:
• Proxmox VE version:
• Kubernetes version: (use kubectl version):
• OS (e.g. from /etc/os-release):