Improve Bean Validation documentation by clarifying dependency requirement

Author: Kapil-chn7

documentation/spring-boot-docs/src/docs/antora/modules/reference/pages/io/validation.adoc

@@ -1,7 +1,7 @@
 [[io.validation]]
 = Validation
 
-The method validation feature supported by Bean Validation 1.1 is automatically enabled as long as a JSR-303 implementation (such as Hibernate validator) is on the classpath.
+The method validation feature supported by Bean Validation 1.1 is automatically enabled as long as a JSR-303 implementation (such as Hibernate Validator, typically provided by adding `spring-boot-starter-validation`) is on the classpath.
 This lets bean methods be annotated with `jakarta.validation` constraints on their parameters and/or on their return value.
 Target classes with such annotated methods need to be annotated with the javadoc:org.springframework.validation.annotation.Validated[format=annotation] annotation at the type level for their methods to be searched for inline constraint annotations.
 
@@ -14,4 +14,4 @@ This allows you to use xref:features/internationalization.adoc[your application'
 Once the parameters have been resolved, message interpolation is completed using Bean Validation's default interpolator.
 
 To customize the javadoc:jakarta.validation.Configuration[] used to build the javadoc:jakarta.validation.ValidatorFactory[], define a javadoc:org.springframework.boot.validation.autoconfigure.ValidationConfigurationCustomizer[] bean.
-When multiple customizer beans are defined, they are called in order based on their javadoc:org.springframework.core.annotation.Order[format=annotation] annotation or javadoc:org.springframework.core.Ordered[] implementation.
+When multiple customizer beans are defined, they are called in order based on their javadoc:org.springframework.core.annotation.Order[format=annotation] annotation or javadoc:org.springframework.core.Ordered[] implementation.