Update app.py int response to die roll tool

app.py

@@ -30,7 +30,7 @@ def toss_a_die(k: int) -> int:
 
     try: 
         value = random.randint(1, k)
-        return f"The random roll of a dice gives a value of {value}"
+        return value
     except Exception as e:
         return f"How many sides does the dice have?"