New issue by freshprince on void-packages repository

https://github.com/void-linux/void-packages/issues/34657

Description:
```
post_install() {
	vsv synapse

	vinstall docs/sample_config.yaml 644 etc/synapse homeserver.yaml
	vinstall docs/sample_log_config.yaml 644 etc/synapse log.yaml
}
```

not really a good idea if someone already has a productive config in /etc/synapse/homeserver.yaml :(