pytest.param: update docs from marked

Author: RonnyPfannschmidt

doc/en/parametrize.rst

@@ -94,7 +94,8 @@ for example with the builtin ``mark.xfail``::
     @pytest.mark.parametrize("test_input,expected", [
         ("3+5", 8),
         ("2+4", 6),
-        pytest.marked(("6*9", 42), pytest.mark.xfail),
+        pytest.param("6*9", 42,
+                     marks=pytest.mark.xfail),
     ])
     def test_eval(test_input, expected):
         assert eval(test_input) == expected