Polishing.

Refine readme.

See #3892

Author: mp911de

README.adoc

@@ -1,4 +1,4 @@
-= Spring Data JPA image:https://jenkins.spring.io/buildStatus/icon?job=spring-data-jpa%2Fmain&subject=Build[link=https://jenkins.spring.io/view/SpringData/job/spring-data-jpa/] image:https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A["Revved up by Develocity", link="https://ge.spring.io/scans?search.rootProjectNames=Spring Data JPA Parent"]
+= Spring Data JPA image:https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A["Revved up by Develocity", link="https://ge.spring.io/scans?search.rootProjectNames=Spring Data JPA Parent"]
 
 Spring Data JPA, part of the larger https://projects.spring.io/spring-data[Spring Data] family, makes it easy to implement JPA-based repositories.
 This module deals with enhanced support for JPA-based data access layers.
@@ -157,7 +157,9 @@ You also need JDK 17 or above.
 
 If you want to build with the regular `mvn` command, you will need https://maven.apache.org/run-maven/index.html[Maven v3.8.0 or above].
 
-_Also see link:CONTRIBUTING.adoc[CONTRIBUTING.adoc] if you wish to submit pull requests, and in particular please sign the https://cla.pivotal.io/sign/spring[Contributor’s Agreement] before your first non-trivial change._
+_Also see link:CONTRIBUTING.adoc[CONTRIBUTING.adoc] if you wish to submit pull requests._
+All commits must include a __Signed-off-by__ trailer at the end of each commit message to indicate that the contributor agrees to the Developer Certificate of Origin.
+For additional details, please refer to the blog post https://spring.io/blog/2025/01/06/hello-dco-goodbye-cla-simplifying-contributions-to-spring[Hello DCO, Goodbye CLA: Simplifying Contributions to Spring].
 
 === Building reference documentation
 
@@ -168,7 +170,7 @@ Building the documentation builds also the project without running tests.
  $ ./mvnw clean install -Pantora
 ----
 
-The generated documentation is available from `target/antora/site/index.html`.
+The generated documentation is available from `target/antora/index.html`.
 
 == Guides