REST API Get Test Steps does not return the correct results

Steps to reproduce:

1 - Create Test Steps Custom Fields

2 - 2 - Use the endpoint

/test/{testKey}/steps

https://docs.getxray.app/display/XRAY/v2.0#/Test%20Step/get_test__testKey__steps

According to doc:

Actual result

Expected result
It should be "wiki" and it should return the "rendered" data