add contributing notice that you need to run the format command

Onatcer · korridor · commit 8fdc4c121920 · 2025-07-31T14:01:17.000+02:00
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -61,6 +61,7 @@ For frontend changes:
 
 ```
 npm run lint:fix
+npm run format
 ```
 
 ## Vision
