improve deprecation message

We you hit a deprecated flag, it'll try to find a valid replacement in the next ones.

```
docker pull -t ubuntu 
Warning: '-t' is deprecated, it will be removed soon. See usage.
....
```

because `-t` will be removed, to replaced.

---

```
docker run -name ls ubuntu ls
Warning: '-name' is deprecated, it will be replaced by '--name' soon. See usage.
...
```