[MPlayer-DOCS] Better encoding description for lavc and x264

[Diego Biurrun]

Diego Biurrun writes:
> Guillaume POIRIER writes:
> >  .B fullinter
> >  Use all available interframe macroblock types (i16x16, i4x4, p16x16-4x4)
> 
> I suppose the values in the () are not all macroblock types, therefore
> we should add "e.g.\&".

What about this?

Diego