Update readme

Author: aaronik

README.md

@@ -18,7 +18,9 @@
 
 ![A fast paced demo of Treewalker.nvim](https://github.com/user-attachments/assets/4d23af49-bd94-412a-bc8c-d546df6775df)
 
-### Move around your code in a syntax tree aware manner.
+<div align="center">
+    <h2>Move around your code in a syntax tree aware manner.</h2>
+</div>
 
 Treewalker uses neovim's native [Treesitter](https://github.com/tree-sitter/tree-sitter) under the hood for syntax tree awareness.
 It has no dependencies, and is meant to "just work". It's "batteries included", with minimal configuration.