GH-1544 Fixed broken doc links
GH-1544 Fixed broken doc links

Resolves #1544

spring-cloud/spring-cloud-stream,garyrussell/spring-cloud-stream,spring-cloud/spring-cloud-stream,ilayaperumalg/spring-cloud-stream,garyrussell/spring-cloud-stream,garyrussell/spring-cloud-stream,ilayaperumalg/spring-cloud-stream,spring-cloud/spring-cloud-stream