Update README.md

Author: zharinov

README.md

@@ -2,7 +2,7 @@
   <img width="256" height="256" alt="logo" src="https://github.com/user-attachments/assets/2a93f290-a758-4b19-a38e-3f12b61743d7" />
 </p>
 
-<h1 align="center">Plotnik</h1>
+<h1 align="center">plotnik</h1>
 
 <p align="center">
   <i>Typed query language for <a href="https://tree-sitter.github.io/">tree-sitter</a></i>