New review comment by Shanduur on void-packages repository

https://github.com/void-linux/void-packages/pull/39318#discussion_r973772526

Comment:
@sgn  will adding just `conf_files=/etc/promtail/config.yaml` create empty file? Or do I need:

```diff
-	vcopy clients/cmd/promtail/promtail-local-config.yaml etc/promtail/promtail-local-config.yaml
+	vcopy clients/cmd/promtail/promtail-local-config.yaml etc/promtail/config.yaml
```