Duplicated `--where` click option for `fio cat`

```
$ fio cat --help
/opt/miniconda3/envs/prod/lib/python3.13/site-packages/click/core.py:1223: UserWarning: The parameter --where is used more than once. Remove its duplicate as parameters should be unique.
  parser = self.make_parser(ctx)
```

Creating a PR now for this.