Correct sample app repository URL and name

s2i/bin/usage

@@ -6,9 +6,9 @@ To use it, install STI: https://github.com/openshift/source-to-image
 
 Sample invocation:
 
-sti build git://github.com/codecentric/spring-boot-sample codecentric/springboot-maven3-centos springboot-app
+sti build git://github.com/codecentric/springboot-sample-app codecentric/springboot-maven3-centos springboot-sample-app
 
 
 You can then run the resulting image via:
-docker run -p 8080:8080 springboot-app
+docker run -p 8080:8080 springboot-sample-app
 EOF