Document location of spring.cloud.config.server.encrypt.enabled.  Fixes 887.
Document location of spring.cloud.config.server.encrypt.enabled.  Fixes 887.

spring-cloud/spring-cloud-config,spring-cloud/spring-cloud-config,spring-cloud/spring-cloud-config,marbon87/spring-cloud-config,marbon87/spring-cloud-config,marbon87/spring-cloud-config