Point to gradle plugin's doc for custom dependency versions

Fixes gh-12807

spring-boot-project/spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -2575,7 +2575,6 @@ to be controlled by Jackson's date serialization configuration settings.
 
 
 
-[[howto-customize-dependency-versions-with-maven]]
 [[howto-customize-dependency-versions]]
 === Customize Dependency Versions
 If you use a Maven build that inherits directly or indirectly from
@@ -2601,7 +2600,8 @@ the artifact yourself instead of overriding the property.
 WARNING: Each Spring Boot release is designed and tested against this specific set of
 third-party dependencies. Overriding versions may cause compatibility issues.
 
-
+To override dependency versions in Gradle, see {spring-boot-gradle-plugin-reference}/#managing-dependencies-customizing[ this section ]
+of the Gradle plugin's documentation.
 
 [[howto-create-an-executable-jar-with-maven]]
 === Create an Executable JAR with Maven