SpringBoot Rename NoneOfNestedConditions to NoneNestedConditions in example docs

Java doc is

static class OnNeitherJndiNorProperty extends NoneOfNestedConditions {

when it should probably be

static class OnNeitherJndiNorProperty extends NoneNestedConditions {

Comment From: Sineaggi

Fixed https://github.com/spring-projects/spring-boot/issues/22206

Comment From: wilkinsona

@Sineaggi Thanks very much for making your first contribution to Spring Boot.