chore: refine counter display update

Made-with: Cursor

Author: danielaEsc

script.js

@@ -6,7 +6,7 @@ const resetBtn = document.getElementById('reset');
 const increaseBtn = document.getElementById('increase');
 
 function updateDisplay() {
-    counterDisplay.textContent = count;
+    counterDisplay.textContent = count.toString();
     if (count > 0) {
         counterDisplay.style.color = '#2ecc71';
     } else if (count < 0) {