correct URL

docs/intro_chapter.sgml

@@ -22,7 +22,7 @@ feature is still experimental, but copes well with straightforward entries
 
     <PARA>
 For more information on &prog; go to 
-<ULINK URL="http://www.sanger.ac.uk/Software/Artemis/" TYPE="external">the &prog;
+<ULINK URL="http://www.sanger.ac.uk/resources/software/artemis/" TYPE="external">the &prog;
 web pages</ULINK>.
     </PARA>
   </SECT1>