Task Listener section in user guide requires updation

[bhuvangupta]

http://www.activiti.org/userguide/#taskListeners

says

class: the delegation class that must be called. This class must implement the org.activiti.engine.impl.pvm.delegate.TaskListener interface.‍

but in 5.15.1

org.activiti.engine.impl.pvm.delegate.TaskListener‍

is deprecated as show by eclipse

need to replace it and fix the eg code with

org.activiti.engine.delegate.TaskListener‍

[sathish1]

You are correct. Submitted a pull request to update it in the document.