Typo in cli benchmark section help output

**Describe the bug**
There is a typo in the help output from the cli

**To Reproduce**
./zli -h

**Expected behavior**
under the benchmark section:
```
 --output-csv
    Output file path for CSV-formatted summary statistic.
```

instead, currently
```
 --output-csv
    Output file path for CSV-formatted sumamry statistic.
```

