Add link to https://wkhtmltopdf.org/

diff --git a/doc/markdown.md b/doc/markdown.md
index 602b3124c8d6af55c41a9444fc84b083661a8d06..128895a4cbd3da87d1fc8588e75c90b6f80d5a22 100644 (file)
--- a/doc/markdown.md
+++ b/doc/markdown.md
@@ -34,7 +34,7 @@ Then `Ctrl+Shift+P`, `Run Command` and select `markdown to HTML`.
 
 ### Setup
 
-Install `wkhtml2pdf.exe` somewhere on my path. 
+Install [wkhtml2pdf.exe](https://wkhtmltopdf.org/) somewhere on my path. 
 
 ### Use