Ajout du script html -> xhtml

etherpad_to_hdoc/antce/xsl/html2xhtml.xsl

+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+    xmlns:xs="http://www.w3.org/2001/XMLSchema"
+    exclude-result-prefixes="xs"
+    version="2.0">
+    
+</xsl:stylesheet>
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