DDC-3570: [GH-1305] Documentation : fix table prefix with STI

[doctrinebot]

Jira issue originally created by user @doctrinebot:

This issue is created automatically through a Github pull request on behalf of guillaumerobin:

Url: #1305

Message:

If an Entity use STI, it gets its table name from the parent class. In this case, we need to check that the class is the root class of the hierarchy when adding prefix, otherwise children class are prefixed twice.

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1305] was assigned:
#1305

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1305] was merged:
#1305

[doctrinebot]

Issue was closed with resolution "Fixed"