Merge pull request #11 from hermes-repair/14

fix(discount): convert whole-number percent with /100 (incident hermes-code-demo/14).

Reviewed-by: Hermes coordinator (independent final review)

src/discount.py

@@ -10,4 +10,4 @@ def apply_discount(subtotal: float, percent: float) -> float:
 
     if percent < 0 or percent > 100:
         raise ValueError("percent must be between 0 and 100")
-    return round(subtotal * (1 - percent / 10), 2)
+    return round(subtotal * (1 - percent / 100), 2)