CLI use to update database retention missing --database argument

`influxdb3:~# influxdb3 update database --retention-period 365d ` as per documentation
```
error: unexpected argument '' found

Usage: influxdb3 update database [OPTIONS] --database

For more information, try '--help'.
```

You cannot just use the database name as argument, you have to prefix it with **--database**

##### Relevant URLs
- https://docs.influxdata.com/influxdb3/enterprise/reference/internals/data-retention/
- _Provide other relevant URLs (project issues, community threads, etc.)_

Open the linked data-retention documentation and review the `influxdb3 update database` example against the CLI usage shown in the issue. Update the example so it matches the required option syntax, then verify that the rendered command no longer presents the database name as a positional argument.

Written by the indexing model from the issue text.