Update README.md

Author: ansantam

README.md

@@ -17,7 +17,7 @@ This repository contains the material for the second day of the [RL4AA'23](https
 
 ## Python tutorial: reinforcement learning implementation example
 
-- Github repository containing the material: [https://github.com/ansantam/RL4AA23](https://github.com/ansantam/RL4AA23)
+- Github repository containing the material: [https://github.com/RL4AA/RL4AA23](https://github.com/RL4AA/RL4AA23)
 - Tutorial in slide form: [here](https://ansantam.github.io/RL4AA23/tutorial.slides.html#/)
 
 ## Getting started