Change the embedded XSLT version from 2.0 to 3.0 (#663)

Documentation/teixsl.xml

@@ -204,7 +204,7 @@ be asked if you want to install them.</p>
 	<code>tei/xml/tei/stylesheet/profiles</code>. For example, to create your local profile for Word to TEI, create and a directory
 	called <code>local</code>, and under that one called <code>docx</code>. In there, create a file
 	called <code>from.xsl</code> which looks like this:
-  <egXML xmlns="http://www.tei-c.org/ns/Examples" rend="full"><xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns="http://www.tei-c.org/ns/1.0" xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main" version="2.0" exclude-result-prefixes="w"><xsl:import href="../../default/docx/from.xsl"/></xsl:stylesheet></egXML>
+  <egXML xmlns="http://www.tei-c.org/ns/Examples" rend="full"><xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns="http://www.tei-c.org/ns/1.0" xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main" version="3.0" exclude-result-prefixes="w"><xsl:import href="../../default/docx/from.xsl"/></xsl:stylesheet></egXML>
 Edit that accordingly, and then choose the <code>local</code> profile in oXygen transformations.</p>
         </div>
         <div xml:id="oxgarage">