New review comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/29791#discussion_r602828870

Comment:
```suggestion
go_ldflags="-s -w
 -X github.com/CircleCI-Public/${pkgname}/version.Version=${version}
 -X github.com/CircleCI-Public/${pkgname}/version.packageManager=xbps"
```

Mostly for neatness :)