Update README.md

Author: MartenBE

README.md

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 Build slides using markdown, whilst adhering to the principles learned from the [How to avoid death By PowerPoint](https://www.youtube.com/watch?v=Iwpi1Lm6dFo) TEDx Talk.
 
-You can see the slides of this repository as a demo at https://github.com/HoGentTIN/hogent-markdown-slides . Play with it to see what it can do!
+You can see the slides of this repository as a demo at https://hogenttin.github.io/hogent-markdown-slides/ . Play with it to see what it can do!
 
 ## Basic usage