Fix semantic errors in last commit

Signed-off-by: Hritik Vijay <hritikxx8@gmail.com>

Author: Hritik14

tests/test_version_range.py

@@ -159,8 +159,8 @@ def test_GemVersionRange_from_native_range_with_pessimistic_operator(self):
 }
 
 
-@pytest.mark.xfail("Not all schemes are implemented yet")
-def test_all_schemes_are_tested_for_round_tripping(self):
+@pytest.mark.xfail(reason="Not all schemes are implemented yet")
+def test_all_schemes_are_tested_for_round_tripping():
 
     for scheme in RANGE_CLASS_BY_SCHEMES:
         VERSION_RANGE_TESTS_BY_SCHEME[scheme]
@@ -170,7 +170,7 @@ def test_all_schemes_are_tested_for_round_tripping(self):
     "scheme, native_ranges",
     VERSION_RANGE_TESTS_BY_SCHEME.items(),
 )
-def test_from_native_and_from_string_round_trip(self, scheme, native_ranges):
+def test_from_native_and_from_string_round_trip(scheme, native_ranges):
 
     range_class = RANGE_CLASS_BY_SCHEMES[scheme]
     for rng in native_ranges: