Fix warning about documentation comments in Prism Java source code

Author: andrykonchin

src/yarp/java/org/prism/AbstractNodeVisitor.java

@@ -1,10 +1,10 @@
-/******************************************************************************/
+/* ****************************************************************************/
 /* This file is generated by the templates/template.rb script and should not  */
 /* be modified manually. See                                                  */
 /* templates/java/org/prism/AbstractNodeVisitor.java.erb                      */
 /* if you are looking to modify the                                           */
 /* template                                                                   */
-/******************************************************************************/
+/* ****************************************************************************/
 
 package org.prism;
 

src/yarp/java/org/prism/Nodes.java

@@ -1,10 +1,10 @@
-/******************************************************************************/
+/* ****************************************************************************/
 /* This file is generated by the templates/template.rb script and should not  */
 /* be modified manually. See                                                  */
 /* templates/java/org/prism/Nodes.java.erb                                    */
 /* if you are looking to modify the                                           */
 /* template                                                                   */
-/******************************************************************************/
+/* ****************************************************************************/
 
 package org.prism;