Fix README markdown syntax - remove extra code fences

Author: mr-september

README.md

@@ -13,6 +13,8 @@ Available on the Chrome Web Store for all Chromium browsers!
 [![License](https://img.shields.io/badge/License-MIT-green.svg)](LICENSE)
 [![Chrome Web Store](https://img.shields.io/badge/Chrome%20Web%20Store-Coming%20Soon-orange.svg)](https://chromewebstore.google.com/)
 [![Chromium Compatible](https://img.shields.io/badge/Chromium-Compatible-brightgreen.svg)](https://www.chromium.org/)
+
+## 💖 Support FOSS Projects
 ```
 
 ## 💖 Support FOSS Projects