Replace New and Noteworthy with links to release notes.

Closes #2358
See spring-projects/spring-data-relational#1351

README.adoc

@@ -169,7 +169,6 @@ We’d love to help!
 https://docs.spring.io/spring-data/elasticsearch/docs/current/reference/html/[reference documentation], and https://docs.spring.io/spring-data/elasticsearch/docs/current/api/[Javadocs].
 * Learn the Spring basics – Spring Data builds on Spring Framework, check the https://spring.io[spring.io] web-site for a wealth of reference documentation.
 If you are just starting out with Spring, try one of the https://spring.io/guides[guides].
-* If you are upgrading, check out the https://docs.spring.io/spring-data/elasticsearch/docs/current/changelog.txt[changelog] for "`new and noteworthy`" features.
 * Ask a question - we monitor https://stackoverflow.com[stackoverflow.com] for questions tagged with https://stackoverflow.com/tags/spring-data[`spring-data-elasticsearch`].
 You can also chat with the community on https://gitter.im/spring-projects/spring-data[Gitter].
 * Report bugs with Spring Data for Elasticsearch at https://github.com/spring-projects/spring-data-elasticsearch/issues[https://github.com/spring-projects/spring-data-elasticsearch/issues].

src/main/asciidoc/index.adoc

@@ -12,6 +12,8 @@ NOTE: Copies of this document may be made for your own use and for distribution
 toc::[]
 
 include::preface.adoc[]
+include::{spring-data-commons-docs}/upgrade.adoc[leveloffset=+1]
+
 
 :leveloffset: +1
 include::{spring-data-commons-docs}/repositories.adoc[]