Adopted new convention from template

src/Python/Problem056.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 """
 Created on 07 Oct 2021
 
@@ -34,5 +34,4 @@ def compute():
 
 
 if __name__ == "__main__":
-
-    print(f"Result for Problem 56: {compute()}")
+    print(f"Result for Problem 56 is {compute()}")