typo error on Java OCP 8 Programmer II Study Guide Jeanne Boyarsky and Scott Selikoff

[Javid Azimli]

at the page 53 section "Defining a Functional Interface"
in the frame with headline "Applying the @FunctionalInterface Annotation"

Conversely, if a class marked with the @FunctionalInterface
annotation contains more than one abstract method, or no abstract methods at all, then
the compiler will detect this error and not compile.

should be  if a interface marked with the @FunctionalInterface

[Jeanne Boyarsky]

Agreed. @FunctinalInterface goes on an interface. Added to the errata. Thanks.