changed double hyphens to em-dashes

Author: bleekere

TCW/tcw20.xml

@@ -63,7 +63,7 @@ $LastChangedRevision: 8769 $
       <p>This document is intended to set out the way things are
       currently managed  in the
         editing of the TEI Guidelines. General notes on the rationale
-	for this state -- <emph>why</emph> it is the way it is -- may be added here
+	for this state–<emph>why</emph> it is the way it is–may be added here
         later. The intention is to provide information for Council
       members wishing to contribute actively to the continued
       development and maintenance of the text of the Guidelines. </p>