Flink quick-start: create catalog throw error

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/incubator-paimon/issues) and found nothing similar.

### Paimon version

[paimon-flink-1.17-0.5-SNAPSHOT.jar](https://repository.apache.org/snapshots/org/apache/paimon/paimon-flink-1.17/0.5-SNAPSHOT/)

### Compute Engine

Flink 1.17.1

### Minimal reproduce step

Following https://paimon.apache.org/docs/master/engines/flink/.

### What doesn't meet your expectations?

Create catalog error:
```sql
Flink SQL> CREATE CATALOG my_catalog WITH (
> 'type'='paimon',
> 'warehouse'='file:/tmp/paimon'
> );
[ERROR] Could not execute SQL statement. Reason:
org.apache.flink.table.api.ValidationException: Could not find any factory for identifier 'paimon' that implements 'org.apache.flink.table.factories.CatalogFactory' in the classpath.

Available factory identifiers are:

generic_in_memory
```

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Start with the Flink quick-start documentation and the CREATE CATALOG reproduction using paimon-flink-1.17-0.5-SNAPSHOT.jar. Investigate why the paimon CatalogFactory is not found in the classpath; done means the documented SQL creates my_catalog successfully instead of reporting only generic_in_memory.

Written by the indexing model from the issue text.