Update README.md

Author: nicolasvienot

README.md

@@ -1,9 +1,11 @@
-# n-puzzle
+
 ![Rust](https://github.com/nicolasvienot/n-puzzle/workflows/Rust/badge.svg)
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
 [![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
+# n-puzzle
+
 Solving N-puzzle game using Rust and IDA* algorithm
 
 ## Demo 💻