Update README.md

Update website link.

Author: Vandreic

README.md

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 A website containing exercises from a HTML & CSS course by SuperSimpleDev on [YouTube](https://youtu.be/G3e-cpL7ofc).
 
 ## Access the Website
-The website is hosted on GitHub Pages. Click [here](https://vandreic.github.io/html-css-course/) to visit.
+The website is hosted on GitHub Pages. Click [here](https://vandreic.github.io/HTML-CSS-Course/) to visit.
 
 ## Progress
 - [x] 1. HTML Basics