jbpm4 user guide : wrong location for the GPD plugin

I did not find the subdirectory gpd when unzipping the jbpm-4.1.zip , whereas it was present in the 4.0 version. (and is referred to in the 4.1 doc jbpm-4.1/doc/userguide/html_single/index.html#graphicalprocessdesigner)

Is it elsewhere now? ---> yes , it is in jbpm-4.1\install\src\gpd

could someone udpate the doc? Maybe it can be fixed "on-the-fly" without waiting for a real release? after all it is only a text document, no possible side effect on the code

link to forum topic :
http://www.jboss.org/index.html?module=bb&op=viewtopic&t=160731