Added comment.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/FOP_0-20-0_Alt-Design@195545 13f79535-47bb-0310-9956-ffa450edef68

src/org/apache/fop/datatypes/NCName.java

@@ -84,6 +84,7 @@ public class NCName extends StringType {
     }
 
     /**
+     * Get the NCName string value.
      * @return the String.
      */
     public String getNCName() {