#24 stx-stylesheet-definition.xsd not valid according to Xerces

[Radu Coravu]

The XML Schema provided for STX is not valid according to the Xerces parser:

cos-nonambig: "http://stx.sourceforge.net/2002/ns":text and "http://stx.sourceforge.net/2002/ns":text (or elements from their substitution group) violate "Unique Particle Attribution". During validation against this schema, ambiguity would be created for those two particles.

The specification for this problem: http://www.w3.org/TR/xmlschema-1/#cos-nonambig

The problem is that the group "template-content" should not reference "text" directly like:

<xs:element ref="text"/>

as at the end it references the group:
<xs:group ref="text-template-content"/>

which also references text in a choice.
So removing the direct "text" reference at line 73 should fix the problem.