New review comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/45805#discussion_r1652692464

Comment:
If this is going to source a configuration, that configuration might as well provide the opportunity to override the configuration file:
```suggestion
exec chpst -u _ergo:_ergo ergo run ${OPTS:---conf /etc/ergo.conf}
```