A possible bug in ghc documentation

Hi all, Sorry to bother. I'm not sure if this is the right place to post this, but I find a possible bug in ghc documentation. http://downloads.haskell.org/~ghc/8.0.2/docs/html/users_guide/flags.html#lan... ^In 7.6.12, -XDeriveGeneric http://downloads.haskell.org/~ghc/8.0.2/docs/html/users_guide/glasgow_exts.h... appears twice. If it is a bug, please fix. Thanks. Yi