Fixes Pattern Matching example from Result docs (#1468)

Author: thepabloaguilar

tests/test_examples/test_result/test_result_pattern_matching.py

@@ -16,7 +16,7 @@ def div(first_number: int, second_number: int) -> int:
         print('Result is "{0}"'.format(value))
 
     # Matches if the result stored inside `Failure` is `ZeroDivisionError`
-    case Failure(ZeroDivisionError):
+    case Failure(ZeroDivisionError()):
         print('"ZeroDivisionError" was raised')
 
     # Matches any `Failure` instance