Correct another one-char typo in .R and .Rd

Author: eddelbuettel

R/asis.R

@@ -19,7 +19,7 @@
 ##' Dirk Eddelbuettel for the shortened ones used here
 ##' @examples
 ##' # To register this vignette engine in another package, add
-##' # \code{VignetteBuilder: Rcpp} as well as \code{Suggests: Rcpp} to \code{DESCRIPTON}
+##' # \code{VignetteBuilder: Rcpp} as well as \code{Suggests: Rcpp} to \code{DESCRIPTION}
 ##' # which uses the registration this package provides via
 ##' \dontrun{tools::vignetteEngine("asis", package = pkgname, pattern = "[.](pdf|html)[.]asis$",
 ##'                                weave = asisWeave, tangle = asisTangle)}