This is a standard message to notify contributors about an administrative ruling in effect. It does not imply that there are any issues with your contributions to date.
Please carefully read this information:
A community discussion has authorised the use of general sanctions for pages related to Michael Jackson. The specific details of these sanctions are described here.
Broadly, general sanctions is a system of conduct regulation designed to minimise disruption in controversial topic areas. This means uninvolved administrators can impose sanctions for edits relating to these topics that do not adhere to the purpose of Wikipedia, our standards of behaviour, or relevant policies. Administrators may impose sanctions such as editing restrictions, bans, or blocks. An editor can only be sanctioned after he or she has been made aware that general sanctions are in effect. This notification is meant to inform you that sanctions are authorised in these topic areas, which you have been editing. It is only effective if it is logged here. Before continuing to edit pages in these topic areas, please familiarise yourself with the general sanctions system. Don't hesitate to contact me or another editor if you have any questions.