[apache#5100] improvement(docs): Add extra documents to clarify the e…

…ngine type of MySQL catalog (apache#6209)

### What changes were proposed in this pull request?

Add more details about the usage of engine type for MySQL catalog. 

### Why are the changes needed?

The value of engine type may be influenced by many factors like MySQL
version, configurations and so on, we need to clarify it.

Fix: apache#5100 

### Does this PR introduce _any_ user-facing change?

N/A

### How was this patch tested?

N/A

docs/jdbc-mysql-catalog.md

@@ -186,6 +186,12 @@ Although MySQL itself does not support table properties, Gravitino offers table
 | `engine`                | The engine used by the table. For example `MyISAM`, `MEMORY`, `CSV`, `ARCHIVE`, `BLACKHOLE`, `FEDERATED`, `ndbinfo`, `MRG_MYISAM`, `PERFORMANCE_SCHEMA`. | `InnoDB`      | No        | No         | Yes       | 0.4.0         |
 | `auto-increment-offset` | Used to specify the starting value of the auto-increment field.                                                                                          | (none)        | No        | No         | Yes       | 0.4.0         |
 
+
+:::note
+Some MySQL storage engines, such as FEDERATED, are not enabled by default and require additional configuration to use. For example, to enable the FEDERATED engine, set federated=1 in the MySQL configuration file. Similarly, engines like ndbinfo, MRG_MYISAM, and PERFORMANCE_SCHEMA may also require specific prerequisites or configurations. For detailed instructions, 
+refer to the [MySQL documentation](https://dev.mysql.com/doc/refman/8.0/en/federated-storage-engine.html).
+:::
+
 ### Table indexes
 
 - Supports PRIMARY_KEY and UNIQUE_KEY.