New review comment by classabbyamp on void-packages repository

https://github.com/void-linux/void-packages/pull/38427#discussion_r935866262

Comment:
```suggestion
post_install() {
	vlicense LICENSE

	_cli=$(find $GOPATH/bin -name $pkgname)
	for shell in bash fish zsh; do
		vtargetrun $_cli completion $shell > ${pkgname}.${shell}
		vcompletion ${pkgname}.${shell} $shell
	done

	vtargetrun $_cli man > ${pkgname}.1
	vman ${pkgname}.1
}
```
this is a bit neater