Bug? Open BPMN as plain text shows 'activiti'

Dear all,

As Flowable is fork from Activiti, all mention of ‘activiti’ should be replaced by ‘flowable’. Yet after I create a BPMN using Flowable Designer, I still can find ‘activiti’ if I open the BPMN as plain text. If there is an Administrator here, please file a bug report for this.

Example:

<userTask id="holidayApprovedTask" name="Holiday approved" activiti:assignee="${employee}"></userTask>

According to section 2.3.2 of the Doc, I think the following should be the correct one:

<userTask id="holidayApprovedTask" name="Holiday approved" flowable:assignee="${employee}"></userTask>