Update macOS package in doc (#1800)
Update macOS package in doc (#1800)

From [CI package
job](https://circleci.com/gh/aeternity/epoch/43076#artifacts/containers/0)
on master 0b6b11c:
> epoch-0b6b11c5e9201ac3a7254f3e8f44673aa70580be-osx-10.13.6.tar.gz
aeternity/epoch,aeternity/epoch,aeternity/epoch,aeternity/epoch