Update index.Rmd

Add Github source material to Course Format notice

index.Rmd

@@ -49,7 +49,7 @@ Check out the video below. It provides a summary and introduction to this course
 ## Course Format
 
 :::{.notice}
-This course is available in [Bookdown](https://hutchdatascience.org/NIH_Data_Sharing/) and [Leanpub](https://leanpub.com/courses/fredhutch/nih_data_sharing) formats. The Bookdown format allows you to browse the content on a web page. Creating a free account with Leanpub allows you to take quizzes on the material and earn a certificate of completion.
+This course is available in [Bookdown](https://hutchdatascience.org/NIH_Data_Sharing/) and [Leanpub](https://leanpub.com/courses/fredhutch/nih_data_sharing) formats. The Bookdown format allows you to browse the content on a web page. Creating a free account with Leanpub allows you to take quizzes on the material and earn a certificate of completion. Additionally, our courses are open source, you can find the [source material for this course on GitHub](https://github.com/fhdsl/NIH_Data_Sharing).
 :::
 
 ## Motivation