service update: fix service create example
Service create expects the name to be passed using the
`--name` flag, not as a positional parameter
@@ -158,16 +158,13 @@ service name.
```bash
$ docker service create \
--name=myservice \
- --mount \
- type=volume,source=test-data,target=/somewhere \
- nginx:alpine \
- myservice
+ --mount type=volume,source=test-data,target=/somewhere \
+ nginx:alpine
myservice
$ docker service update \
- --mount-add \
- type=volume,source=other-volume,target=/somewhere-else \
+ --mount-add type=volume,source=other-volume,target=/somewhere-else \
myservice
myservice
