Link to @⁠ContextConfiguration Javadoc from reference manual

Closes gh-35088

Signed-off-by: Tran Ngoc Nhan <[email protected]>

Author: ngocnhan-tran1996

framework-docs/modules/ROOT/pages/testing/annotations/integration-spring/annotation-contextconfiguration.adoc

@@ -137,6 +137,6 @@ configuration classes as well as context initializers that are declared by super
 or enclosing classes.
 
 See xref:testing/testcontext-framework/ctx-management.adoc[Context Management],
-xref:testing/testcontext-framework/support-classes.adoc#testcontext-junit-jupiter-nested-test-configuration[`@Nested` test class configuration], and the `@ContextConfiguration`
+xref:testing/testcontext-framework/support-classes.adoc#testcontext-junit-jupiter-nested-test-configuration[`@Nested` test class configuration], and the {spring-framework-api}/test/context/ContextConfiguration.html[`@ContextConfiguration`]
 javadocs for further details.