Hello Kenji,
I agree that having to fix this typo manually is not ideal.
I haven't been able to reproduce this error, but my IDE is a slightly newer build. What I did found weird is that the version of the Config Tools integrations is very different.
Would you please provide the Peripherals Tool version and, would you please try installing a newer MCUXpresso IDE version to see if perhaps this error was already fixed in a subsequent release?

Regards,
Gustavo