Update README.md

Author: adrianhajdin

README.md

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 # Build and Deploy a Fantastic 3D Portfolio Website with Three.js and React.js
-![3D Portfolio](https://i.ibb.co/8cLfj3X/image.png)
+![3D Portfolio](https://i.ibb.co/9ykhLtM/Thumbnail.png)
 
 ## Introduction
 The most impressive websites in the world use 3D graphics and animations to bring their content to life. Learn how to build your own ThreeJS 3D Developer Portfolio today!