Adding hyperlinks in @Constraint javadoc to aid users in navigating

src/main/java/jakarta/validation/Constraint.java

@@ -45,11 +45,11 @@
  *
  * A constraint is both generic and cross-parameter if
  * <ul>
- *     <li>two kinds of {@code ConstraintValidator}s are attached to the
+ *     <li>two kinds of {@link ConstraintValidator}s are attached to the
  *     constraint, one targeting {@link ValidationTarget#ANNOTATED_ELEMENT}
  *     and one targeting {@link ValidationTarget#PARAMETERS},</li>
- *     <li>or if a {@code ConstraintValidator} targets both
- *     {@code ANNOTATED_ELEMENT} and {@code PARAMETERS}.</li>
+ *     <li>or if a {@link ConstraintValidator} targets both
+ *     {@link ValidationTarget#ANNOTATED_ELEMENT} and {@link ValidationTarget#PARAMETERS}.</li>
  * </ul>
  *
  * Such dual constraints are rare. See {@link SupportedValidationTarget} for more info.
@@ -67,6 +67,9 @@
  * }
  * </pre>
  *
+ * @see Payload
+ * @see ConstraintTarget
+ *
  * @author Emmanuel Bernard
  * @author Gavin King
  * @author Hardy Ferentschik
@@ -79,13 +82,13 @@
 	/**
 	 * {@link ConstraintValidator} classes implementing the constraint. The given classes
 	 * must reference distinct target types for a given {@link ValidationTarget}. If two
-	 * {@code ConstraintValidator}s refer to the same type, an exception will occur.
+	 * {@link ConstraintValidator}s refer to the same type, an exception will occur.
 	 * <p>
-	 * At most one {@code ConstraintValidator} targeting the array of parameters of
+	 * At most one {@link ConstraintValidator} targeting the array of parameters of
 	 * methods or constructors (aka cross-parameter) is accepted. If two or more
 	 * are present, an exception will occur.
 	 *
-	 * @return array of {@code ConstraintValidator} classes implementing the constraint
+	 * @return array of {@link ConstraintValidator} classes implementing the constraint
 	 */
 	Class<? extends ConstraintValidator<?, ?>>[] validatedBy();
 }