tdf#114155 change interface domain to 'wpt'

Change-Id: I91fc11482273b6bd1a165fc82d6b24fc726b70a3
Reviewed-on: https://gerrit.libreoffice.org/45573Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>

writerperfect/uiconfig/ui/exportepub.ui

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.20.0 -->
-<interface domain="sw">
+<interface domain="wpt">
   <requires lib="gtk+" version="3.0"/>
   <object class="GtkDialog" id="EpubDialog">
     <property name="can_focus">False</property>