Chapter's .cargo/config file overwrites settings from project's f3discovery/src/.cargo

[Cloufish]

In each of the chapter's directory there's .cargo/config containing flags completely different from the previously configured f3discovery/src/.cargo/config.toml

f3discovery/src/.cargo/config:

runner = "arm-none-eabi-gdb -q -x ../openocd.gdb"

vs
.cargo/config:

runner = "arm-none-eabi-gdb -q -x openocd.gdb"

Therefore:

• Each time we begin new chapter there's an error of pre-scripted gdb file not found openocd.gdb: No such file or directory.
• If someone has a different runner e.g. gdb-multiarch, then he also is confused because of other errors

Can't we delete every config in each chapter? After all the book said:

• That the config.toml in the main project applies to every Chapter

So why is that not true?
Or maybe it's not working only in my case...
maybe there's something wrong with me o.o