update documentation

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: striprtf
 Type: Package
 Title: Extract Text from RTF File
-Version: 0.5.0
+Version: 0.5.1
 Authors@R: c(
     person("Kota", "Mori", email = "[email protected]", role = c("aut", "cre"))
   )

R/striprtf.R

@@ -16,7 +16,7 @@
 #' \itemize{
 #'  \item{Python 3 implementation by Gilson Filho: \url{https://gist.github.com/gilsondev/7c1d2d753ddb522e7bc22511cfb08676}}
 #'  \item{Original discussion thread: \url{http://stackoverflow.com/a/188877}}
-#'  \item{Code page table: \url{http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/}}
+#'  \item{Code page table: \url{http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/}}
 #' }
 #' @details Rich text format (RTF) files are written as a text file
 #' consisting of ASCII characters.  The specification has been developed by
@@ -35,8 +35,8 @@
 #' by Japanese version of Microsoft Word marks \code{\\ansicpg932}, which indicates
 #' the code page 932 is used for letter-code conversion.
 #' The function detects the code page indication and
-#' convert them to UTF-8 as possible.  Conversion table is retrieved from
-#' here: (\url{http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/}).
+#' convert the characters to UTF-8 where possible.  Conversion tables are retrieved from
+#' here: (\url{http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/}).
 #'
 read_rtf <- function(file, verbose = FALSE,
                      row_start = "*| ", row_end = "", cell_end = " | ", ignore_tables=FALSE,