[payroll] for partial time contract, clarify that (Has Monthly Wage) amount field is paid salary and not full-time equivalent

[elvisbegovic]

Module : Payroll

Case: partial time contract

Considering this at 54:26 https://www.youtube.com/live/F4WVD_Tngws?si=tzbeDtzpHfSxu6I6&t=3265

Documentation should specify that input vield "Has Monthly Wage" is paid salary not full-time equivalent.