@EugenKon there is no consul-template.service, nor is one necessary to run Nomad because Nomad runs consul-template internally as part of the template runner. In fact, I'd be surprised if you were to find consul-template being invoked directly in any of the tutorial.
Original issue: https://github.com/hashicorp/consul-template/issues/1946
As was mentioned by @tgross:
TODO: Please remove the mentioned service.