Add topics to validation.adoc to test the preview

docs/src/main/asciidoc/validation.adoc

@@ -7,7 +7,7 @@ https://github.com/quarkusio/quarkus/tree/main/docs/src/main/asciidoc
 include::_attributes.adoc[]
 :categories: web, data
 :summary: This guide covers how to use Hibernate Validator/Bean Validation in your REST services.
-:topics: bean-validation,hibernate-validator,validation
+:topics: bean-validation,hibernate-validator,validation,validator,constraints
 :extensions: io.quarkus:quarkus-hibernate-validator
 
 This guide covers how to use Hibernate Validator/Bean Validation for: