Fill in since annotations (#9758)

Co-authored-by: timja <21194782+timja@users.noreply.github.com>

core/src/main/java/hudson/model/UserPropertyDescriptor.java

@@ -132,7 +132,7 @@ public abstract class UserPropertyDescriptor extends Descriptor<UserProperty> {
      * Optional description for the configurable object
      * Displays as plain text
      *
-     * @since TODO
+     * @since 2.477
      */
     @Nullable
     public String getDescription() {

core/src/main/java/jenkins/model/HistoricalBuild.java

@@ -45,7 +45,7 @@ import org.kohsuke.accmod.restrictions.Beta;
 /**
  * A {@link Run}-like object as it might be displayed by {@link BuildHistoryWidget}.
  *
- * @since TODO
+ * @since 2.477
  */
 @Restricted(Beta.class)
 public interface HistoricalBuild extends ModelObject {