Remove raw html from docs

The main page of the qtquick3d docs uses a raw HTML table. Could you convert this table to a normal qdoc table, using \table etc instead of \raw? \raw has been deprecated because of DITA output which doesn't handle HTML.

The docs for \table can be found here: http://doc.qt.nokia.com/qdoc/10-qdoc-commands-tablesandlists.html#table-command

— from Casper.Vandonderen@nokia.com