go-patterns/messaging/publish_subscribe.md

[cuiyuan]

https://github.com/tmrts/go-patterns/blob/master/messaging/publish_subscribe.md

 if _, ok := s.ch; !ok {
        return errors.New("Topic has been closed")
 }

assignment count mismatch: 2 = 1

[Tamer Tas]

@cuiyuan good catch, thanks! There was a missing arrow for channel reads which is now fixed 82fc76d