Fix documentation for adding a backoff policy. Fixes #423

docs/src/main/asciidoc/spring-cloud-commons.adoc

@@ -393,15 +393,15 @@ You can use `client.ribbon.MaxAutoRetries`, `client.ribbon.MaxAutoRetriesNextSer
 If you would like to disable the retry logic with Spring Retry on the classpath, you can set `spring.cloud.loadbalancer.retry.enabled=false`.
 See the https://github.com/Netflix/ribbon/wiki/Getting-Started#the-properties-file-sample-clientproperties[Ribbon documentation] for a description of what these properties do.
 
-If you would like to implement a `BackOffPolicy` in your retries, you need to create a bean of type `LoadBalancedBackOffPolicyFactory` and return the `BackOffPolicy` you would like to use for a given service, as shown in the following example:
+If you would like to implement a `BackOffPolicy` in your retries, you need to create a bean of type `LoadBalancedRetryFactory` and override the `createBackOffPolicy` method:
 
 [source,java,indent=0]
 ----
 @Configuration
 public class MyConfiguration {
     @Bean
-    LoadBalancedBackOffPolicyFactory backOffPolciyFactory() {
-        return new LoadBalancedBackOffPolicyFactory() {
+    LoadBalancedRetryFactory retryFactory() {
+        return new LoadBalancedRetryFactory() {
             @Override
             public BackOffPolicy createBackOffPolicy(String service) {
         		return new ExponentialBackOffPolicy();