Updated test

tests/test_gromacsparser.py

@@ -499,6 +499,6 @@ def get_dataset(filename_with_path):
     assert sec_results.lambda_index == 7
     assert len(sec_results.times) == 5001
     assert sec_results.times.to("ps")[10].magnitude == approx(2.0)
-    assert sec_results.value_unit == "kilojoule"
+    assert sec_results.value_unit == "joule"
     assert isinstance(sec_results.method_ref, FreeEnergyCalculationParameters)
     # TODO add testing of hdf5 references in sec_results ('value_total_energy_magnitude', 'value_total_energy_derivative_magnitude', 'value_total_energy_differences_magnitude', 'value_PV_energy_magnitude') to NOMAD testing