fix translation strings with multiple parameters


this fixes a lot of warnings given by msgmerge:

../PLCOpenEditor.py:196: warning: 'msgid' format string with unnamed arguments cannot be properly localized:
The translator cannot reorder the arguments.
Please consider using a format string with named arguments,

<?xml version='1.0' encoding='utf-8'?>
<BeremizRoot URI_location="LOCAL://">
  <TargetType/>
</BeremizRoot>