fix jodd-db document

[Restmad]

https://jodd.org/db/dbquery.html

DbQuery query = new DbQuery(connection, "create table ...");

construct method not exists, only static method.

can document explain how jodd-db designed. dont want only know how to use it.

[Igor Spasić]

Thank you, fixed!

Please check the code for the code design; Jodd DB is really a tinny wrapper.

Of course, you can always ping me if you have some questions!