Whoops, forgot underscore in prolog lexer
Whoops, forgot underscore in prolog lexer

--HG--
branch : trunk

nex3/pygments,nex3/pygments,nex3/pygments,nex3/pygments,nex3/pygments,nex3/pygments,nex3/pygments,nex3/pygments,nex3/pygments,nex3/pygments,nex3/pygments