How can I generate help documentation for my MCU

I am using an STM32F031 and I can't see specific documentation for the F03x type. All I have is F070, F072 and F091 MCU types.

The Low Level API functions do not map correctly. For example, I am trying to set the PLL clock source and the function to do so is LL_RCC_PLL_ConfigDomain_SYS

All three help docs show 3 parameters for the function, whereas the actual function call for my MCU has two parameters.

Ok, it seems Doxygen is used but when I try, I can't get the output correct. For the pre-processor part, I enter the MCU part number STM32F031x6 but I don't get what I expect.

Any help with knowing what to put in the different fields, or a document somewhere that explains how ST does it would be much appreciated

Cheers