fixing a silly format string bug
fixing a silly format string bug

FStarLang/FStar,hoheinzollern/FStar,A-Manning/FStar,hoheinzollern/FStar,msprotz/FStar,MallabaevAzamat/FStar,A-Manning/FStar,aa755/FStar,YaccConstructor/FStar,aa755/FStar,YaccConstructor/FStar,MallabaevAzamat/FStar,aa755/FStar,MallabaevAzamat/FStar,hoheinzollern/FStar,msprotz/FStar,hoheinzollern/FStar,YaccConstructor/FStar,msprotz/FStar,YaccConstructor/FStar,A-Manning/FStar,FStarLang/FStar,MallabaevAzamat/FStar,FStarLang/FStar,msprotz/FStar,aa755/FStar