Fix documentation about backoff policies.
Fix documentation about backoff policies.

spring-cloud/spring-cloud-netflix,ryanjbaxter/spring-cloud-netflix,sfat/spring-cloud-netflix,ryanjbaxter/spring-cloud-netflix,joshiste/spring-cloud-netflix,sfat/spring-cloud-netflix,joshiste/spring-cloud-netflix,sfat/spring-cloud-netflix,joshiste/spring-cloud-netflix,joshiste/spring-cloud-netflix,ryanjbaxter/spring-cloud-netflix,sfat/spring-cloud-netflix,ryanjbaxter/spring-cloud-netflix,joshiste/spring-cloud-netflix,ryanjbaxter/spring-cloud-netflix,sfat/spring-cloud-netflix,spring-cloud/spring-cloud-netflix