Merge pull request #3180 from varunu28/patch-1

Fix link for Spring Cloud Data Flow

Author: olegz

docs/modules/ROOT/pages/index.adoc

@@ -21,7 +21,7 @@ https://github.com/spring-cloud/spring-cloud-stream-samples/[Spring Cloud Stream
 Relevant Links:
 
 [horizontal]
-https://cloud.spring.io/spring-cloud-dataflow/[Spring Cloud Data Flow] :: Spring Cloud Data Flow
+https://spring.io/projects/spring-cloud-dataflow[Spring Cloud Data Flow] :: Spring Cloud Data Flow
 http://www.enterpriseintegrationpatterns.com/[Enterprise Integration Patterns]  :: Patterns and Best Practices for Enterprise Integration
 https://spring.io/projects/spring-integration[Spring Integration]  :: Spring Integration framework