Update README with contact information

Edit README for clarity and formatting

Author: augusto-mate

README.md

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 A responsive, multi‑section webpage built from scratch using **CSS Grid** and **Flexbox** — no frameworks, just modern, maintainable CSS.
 
-**Live Demo (GitHub Pages):** _Add your Pages URL here after publishing_
+**Live Demo (GitHub Pages):** [_Add your Pages URL here after publishing_](https://augusto047.github.io/aurora-layout-responsive/)
 
 ## Highlights
 - **Grid for macro layout** (main + sidebar + footer clusters)