fix dashboard llamacpp port

[sheepdestroyer]

Dashboard reports llama.cpp down on port 8080. The right port is 8083, and anyway canonical prod URL should be used

[github-actions]

The issue highlights that the dashboard is incorrectly reporting llama.cpp as being down on port 8080, while the correct port is 8083. Additionally, it suggests that the canonical production URL should be used instead of relying solely on port references.