[question] About the name of X86_REG_AF

Hi, first of all thank you very much for retdec.
I have a question.
```
X86_REG_CF="cf"
X86_REG_PF="pf"
```
why `X86_REG_AF="az"` not `"af"`

https://github.com/avast/retdec/blob/master/src/capstone2llvmir/x86/x86_init.cpp#L31

The question points to src/capstone2llvmir/x86/x86_init.cpp around line 31; start by reading the surrounding X86_REG_* mappings and their use in the project. The issue does not define whether the expected outcome is an explanation, documentation, or a naming change, so clarify that scope before deciding what would count as done.

Written by the indexing model from the issue text.