Update "What's New in Spring Batch" section

Author: fmbenhassine

spring-batch-docs/src/main/asciidoc/footer/index-footer.adoc

@@ -2,8 +2,7 @@
 Lucas Ward, Dave Syer, Thomas Risberg, Robert Kasanicky, Dan Garrette, Wayne Lund,
 Michael Minella, Chris Schaefer, Gunnar Hillert, Glenn Renfro, Jay Bryant, Mahmoud Ben Hassine
 
-Copyright © 2009 - 2022 Pivotal, Inc. All Rights
-Reserved.
+Copyright © 2009 - 2023 VMware, Inc. All Rights Reserved.
 
 Copies of this document may be made for your own use and for
 distribution to others, provided that you do not charge any fee for such

spring-batch-docs/src/main/asciidoc/index.adoc

@@ -15,7 +15,7 @@ The reference documentation is divided into several sections:
  scenarios, and general guidelines.
 <<spring-batch-architecture.adoc#springBatchArchitecture,Spring Batch Architecture>> :: Spring Batch
 architecture, general batch principles, batch processing strategies.
-<<whatsnew.adoc#whatsNew,What's new in Spring Batch 5.0>> :: New features introduced in version 5.0.
+<<whatsnew.adoc#whatsNew,What's new in Spring Batch 5.1>> :: New features introduced in version 5.1.
 <<domain.adoc#domainLanguageOfBatch,The Domain Language of Batch>> :: Core concepts and abstractions
 of the Batch domain language.
 <<job.adoc#configureJob,Configuring and Running a Job>> :: Job configuration, execution, and