doc: Fix broken links to DocBook wiki

Author: petere

doc/src/sgml/docguide.sgml

@@ -106,7 +106,7 @@
     </varlistentry>
 
     <varlistentry>
-     <term><ulink url="http://wiki.docbook.org/topic/DocBookDssslStylesheets">DocBook DSSSL Stylesheets</ulink></term>
+     <term><ulink url="http://wiki.docbook.org/DocBookDssslStylesheetDocs">DocBook DSSSL Stylesheets</ulink></term>
      <listitem>
       <para>
        These contain the processing instructions for converting the
@@ -117,7 +117,7 @@
     </varlistentry>
 
     <varlistentry>
-     <term><ulink url="http://wiki.docbook.org/topic/DocBookXslStylesheets">DocBook XSL Stylesheets</ulink></term>
+     <term><ulink url="http://wiki.docbook.org/DocBookXslStylesheets">DocBook XSL Stylesheets</ulink></term>
      <listitem>
       <para>
        This is another stylesheet for converting DocBook to other