Clarify effects of @EnableBatchProcessing

Closes gh-48264

Author: wilkinsona

spring-boot-project/spring-boot-docs/src/docs/antora/modules/how-to/pages/batch.adoc

@@ -13,9 +13,12 @@ By default, batch applications require a javadoc:javax.sql.DataSource[] to store
 Spring Batch expects a single javadoc:javax.sql.DataSource[] by default.
 To have it use a javadoc:javax.sql.DataSource[] other than the application’s main javadoc:javax.sql.DataSource[], declare a javadoc:javax.sql.DataSource[] bean, annotating its javadoc:org.springframework.context.annotation.Bean[format=annotation] method with javadoc:org.springframework.boot.autoconfigure.batch.BatchDataSource[format=annotation].
 If you do so and want two data sources (for example by retaining the main auto-configured javadoc:javax.sql.DataSource[]), set the `defaultCandidate` attribute of the javadoc:org.springframework.context.annotation.Bean[format=annotation] annotation to `false`.
-To take greater control, add javadoc:org.springframework.batch.core.configuration.annotation.EnableBatchProcessing[format=annotation] to one of your javadoc:org.springframework.context.annotation.Configuration[format=annotation] classes or extend javadoc:org.springframework.batch.core.configuration.support.DefaultBatchConfiguration[].
-See the API documentation of javadoc:org.springframework.batch.core.configuration.annotation.EnableBatchProcessing[format=annotation]
-and javadoc:org.springframework.batch.core.configuration.support.DefaultBatchConfiguration[] for more details.
+
+To disable Spring Boot's auto-configuration and take complete control of Spring Batch's configuration, add javadoc:org.springframework.batch.core.configuration.annotation.EnableBatchProcessing[format=annotation] to one of your javadoc:org.springframework.context.annotation.Configuration[format=annotation] classes or extend javadoc:org.springframework.batch.core.configuration.support.DefaultBatchConfiguration[].
+This will also disable Spring Boot's support for initializing the Spring Batch database schema.
+
+To learn more about manually configuring Spring Batch, see the API documentation of javadoc:org.springframework.batch.core.configuration.annotation.EnableBatchProcessing[format=annotation]
+and javadoc:org.springframework.batch.core.configuration.support.DefaultBatchConfiguration[].
 
 For more info about Spring Batch, see the {url-spring-batch-site}[Spring Batch project page].