Updated return value for joke tool

app.py

@@ -20,7 +20,7 @@ def tell_a_joke()-> str:
     if response.status_code == 200:
         data = response.json()
         joke = data.get("joke", "No joke found")
-        return joke
+        return f"This is the joke: {joke}"
     else:
         return "Failed to retrieve joke"