Fix broken links in reference documentation #2490
Description
404 NOT_FOUND: https://spring.io/blog/2011/04/27/getting-started-redis-spring-cloud-foundry/
404 NOT_FOUND: https://spring.io/tools/sts
{{ message }}
404 NOT_FOUND: https://spring.io/blog/2011/04/27/getting-started-redis-spring-cloud-foundry/
404 NOT_FOUND: https://spring.io/tools/sts