remove incorrect link to old folders

R-package/man/xgb.dump.Rd

@@ -13,7 +13,8 @@ xgb.dump(model, fname, fmap = "")
 \item{fmap}{feature map file representing the type of feature.
        Detailed description could be found at
        \url{https://github.com/tqchen/xgboost/wiki/Binary-Classification#dump-model}.
-       Run inst/examples/demo.R for the result and inst/examples/featmap.txt
+       See demo/ for walkthrough example in R, and
+       \url{https://github.com/tqchen/xgboost/blob/master/demo/data/featmap.txt}
        for example Format.}
 }
 \description{