add website url to readme

Author: vuillaut

README.md

@@ -1,5 +1,9 @@
 # CTAO Monte Carlo Simulations - DL2 prod5
 
+Visit the webpage here: [https://cta-observatory.github.io/ctao-dl2-prod5/](https://cta-observatory.github.io/ctao-dl2-prod5/)
+
+## Overview
+
 This site provides a simple overview of the public dataset CTAO Monte Carlo Simulations at DL2 level: [https://zenodo.org/records/7298569](https://zenodo.org/records/7298569)
 
 To get more information about the dataset, please visit the Zenodo page.