Docs: Add section about empty Material Names (#1944)
Docs: Add section about empty Material Names (#1944)

This section is being references from OgreXMLConverter when an empty material name is being set, which is something that could backfire for the user eventually.
OGRECave/ogre,paroj/ogre,paroj/ogre,OGRECave/ogre,OGRECave/ogre,OGRECave/ogre,OGRECave/ogre,paroj/ogre,paroj/ogre,paroj/ogre