Format total amount to two decimal places

Author: lulunac27a

main.js

@@ -6,5 +6,5 @@ calculateButton.addEventListener("click", () => {
     let amount = amountInput.value;
     let tipPercent = tipPercentInput.value;
     let totalAmount = amount * (1 + tipPercent / 100);
-    outputText.innerText = `Total Amount: ${totalAmount}`;
+    outputText.innerText = `Total Amount: ${totalAmount.toFixed(2)}`;
 });