Update default message for MR from cube-doctor
Context: cubicweb/cubes/jsonb!30 (closed)
The current message is :
Hello dear contributors,
This is an auto generated modification to help you improve the code base of logilab. If this commit is bad don't hesitate to close this MR and report it here https://forge.extranet.logilab.fr/cubicweb/cube-doctor/-/issues.
It would be great to have a link to the project with the refactor. In fact, this MR induces a new lower bound for cubicweb and this should be included in the MR