Update intro doc with reference to Batch Standalone TCK, at Batch 2.1…

… EE 10 level

Signed-off-by: Scott Kurz <skurz@us.ibm.com>

user_guides/jakartaee/src/main/jbake/content/intro.adoc

@@ -164,7 +164,6 @@ following required and optional Jakarta EE 9.1 technologies:
 * Jakarta JSON Processing 2.0
 * Jakarta JSON Binding 2.0
 * Jakarta Concurrency 2.0
-* Jakarta Batch 2.0
 * Jakarta Authorization 2.0
 * Jakarta Authentication 2.0
 * Jakarta Standard Tag Library 2.0
@@ -466,11 +465,15 @@ In addition to the instructions and requirements described in this
 document, all Jakarta EE 9.1 and Jakarta EE 9.1 Web Profile implementations must
 also pass the standalone TCKs for the following technologies:
 
+* Jakarta Batch 2.1
 * Jakarta Contexts and Dependency Injection 3.0
 * Jakarta Dependency Injection 2.0
 * Jakarta Bean Validation 3.0
 * Jakarta XML Binding 3.0
 
+For more information about the Jakarta Batch technology,
+see the specification at `https://jakarta.ee/specifications/batch/2.1/`
+
 For more information about the Jakarta Contexts and Dependency Injection technology, 
 see the specification at `https://jakarta.ee/specifications/cdi/3.0/`