README is wrong for AutofillFrameworkKotlin and AutofillFramework

[neumaneuma]

I tried installing the AutofillFramework sample application but could not set the service as the autofill service under Settings -> System -> Languages & input -> Autofill service. I attempted this on four different emulators, API level 26 through 29.

After that I uninstalled all the AutofillFramework sample applications and installed the AutofillFrameworkKotlin sample application on the same four emulators. I was able to correctly set these as the autofill service. The README led me to believe that the AutofillFrameworkKotlin sample app wouldn’t work and that the AutofillFramework sample app would, but that was incorrect.