Update ns-ntsecapi-msv1_0_interactive_logon.md

[R-Peleg]

Documentation like in https://docs.microsoft.com/en-us/windows/win32/api/ntsecapi/ns-ntsecapi-kerb_certificate_logon, to clarify the pointers are relative

[PRMerger12]

@homosapienssapiens : Thanks for your contribution! The author(s) have been notified to review your proposed change.