doc improvement.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@2024 71c3de6d-444a-0410-be80-ed276b4c234a

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

@@ -81,6 +81,8 @@ public abstract class Descriptor<T extends Describable<T>> {
 
     /**
      * Human readable name of this kind of configurable object.
+     * <p>
+     * Used as the caption when the user chooses what job type to create.
      */
     public abstract String getDisplayName();