Do not wrap <table> inside <p> on Special:UserRights

Special:UserRights has a table inside a paragraph which is invalid html.
The validator will except the open <p> but than gives a error on the
closing </p>: "No p element in scope but a p end tag seen."
IE11 also gives a hint on the console (hint HTML1509).

Fixed this by just removing the paragraph.

Change-Id: Ie17725d0b8018853e445142fa9c436db5471dcc6