Fix bad attribute in print version.
<?xml version="1.0"?>
<xsl:stylesheet version="1.1"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns="http://www.w3.org/1999/XSL/Format">
<xsl:template name="master-set">
<layout-master-set>
<simple-page-master master-name="book"
margin-top="1cm" margin-bottom="1cm"
margin-left="1cm" margin-right="1cm">
<region-body margin-top="20mm" margin-bottom="25mm"/>
<region-before extent="15mm" precedence="true"/>
<region-after extent="25mm" precedence="true"/>
</simple-page-master>
<page-sequence-master master-name="book-sequence">
<repeatable-page-master-reference master-reference="book"/>
</page-sequence-master>
</layout-master-set>
</xsl:template>
</xsl:stylesheet>