remove incorrect link to old folders

R-package/man/xgb.cv.Rd

@@ -20,7 +20,7 @@ xgb.cv(params = list(), data, nrounds, nfold, label = NULL, showsd = TRUE,
 }
 
   See \url{https://github.com/tqchen/xgboost/wiki/Parameters} for
-  further details. See also inst/examples/demo.R for walkthrough example in R.}
+  further details. See also demo/ for walkthrough example in R.}
 
 \item{data}{takes an \code{xgb.DMatrix} as the input.}
 

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{

R-package/man/xgb.train.Rd

@@ -20,7 +20,7 @@ xgb.train(params = list(), data, nrounds, watchlist = list(), obj = NULL,
 }
 
   See \url{https://github.com/tqchen/xgboost/wiki/Parameters} for
-  further details. See also inst/examples/demo.R for walkthrough example in R.}
+  further details. See also demo/ for walkthrough example in R.}
 
 \item{data}{takes an \code{xgb.DMatrix} as the input.}
 

R-package/man/xgboost.Rd

@@ -25,7 +25,7 @@ xgboost(data = NULL, label = NULL, params = list(), nrounds,
 }
 
   See \url{https://github.com/tqchen/xgboost/wiki/Parameters} for
-  further details. See also inst/examples/demo.R for walkthrough example in R.}
+  further details. See also demo/ for walkthrough example in R.}
 
 \item{nrounds}{the max number of iterations}