It depends what you mean by "wrote wrong". The DA can always re-indict a case and correct a mistake. Some mistakes are not fatal to the indictment as long as the accused is sufficiently on notice. A motion can be filed to challenge the indictment, and you should hire a lawyer to do that.
You should consult your attorney regarding this issue (if you don't have one, get one now, RICO is serious) as there are many factors that apply to whether an indictment is sufficient. If the indictment is dismissed, then the DA would have to re-indict, but that is generally not hard to do.