double escape backslash in doc
diff --git a/R/kable_as_image.R b/R/kable_as_image.R
index 725452d..c5b263e 100644
--- a/R/kable_as_image.R
+++ b/R/kable_as_image.R
@@ -28,7 +28,7 @@
#' `jpeg`, `gif`, `tiff`, etc. Default is `png`.
#' @param latex_header_includes A character vector of extra LaTeX header stuff.
#' Each element is a row. You can have things like
-#' `c("\\usepackage{threeparttable}", "\\usepackage{icons}")`
+#' `c("\\\\usepackage{threeparttable}", "\\\\usepackage{icons}")`
#' @param keep_pdf A T/F option to control if the mid-way standalone pdf should
#' be kept. Default is `FALSE`.
#' @param density Resolution to read the PDF file. Default value is 300, which