Update executable-tutorials.org

Author: dharmatech

executable-tutorials.org

@@ -23,7 +23,7 @@ Authors of courses on sites like Udemy or Pluralsight could benefit from first w
 
 Saturn is an MVC web framework for F#.
 
-[[https://github.com/dharmatech/MvcMovieSaturnTutorial/blob/main/MvcMovieSaturnTutorial.md][MvcMovieSaturnTutorial]] is a tutorial for building a simple web app in Saturn.
+[[https://github.com/dharmatech/MvcMovieSaturnTutorial/blob/main/MvcMovieSaturnTutorial.md][MvcMovieSaturnTutorial]] is a tutorial for building a simple web app in Saturn. That markdown file is generated from the following [[https://github.com/dharmatech/MvcMovieSaturnTutorial/blob/main/MvcMovieSaturn-unit-tested-tutorial.ps1][source file]] which is written in PowerShell. [[https://github.com/dharmatech/MvcMovieSaturnTutorial/blob/main/convert-to-markdown.ps1][This script]] is used to convert the source file to markdown.
 
 ** English-language change descriptions