At gnome-user-docs-2.0.1-1 installation :

  91:gnome-user-docs        ########################################### [ 37%]
/usr/share/gnome/help/introduction-to-gnome/C/introduction-to-gnome.xml:1356:
error: Opening and ending tag mismatch: listitem and varlistentry
        </varlistentry>
               ^
/usr/share/gnome/help/introduction-to-gnome/C/introduction-to-gnome.xml:1478:
error: Opening and ending tag mismatch: varlistentry and variablelist
      </variablelist>
                    ^
/usr/share/gnome/help/introduction-to-gnome/C/introduction-to-gnome.xml:1479:
error: Opening and ending tag mismatch: variablelist and sect2
    </sect2>
           ^
/usr/share/gnome/help/introduction-to-gnome/C/introduction-to-gnome.xml:1480:
error: Opening and ending tag mismatch: sect2 and sect1
  </sect1>
         ^
/usr/share/gnome/help/introduction-to-gnome/C/introduction-to-gnome.xml:1736:
error: Opening and ending tag mismatch: sect1 and article
</article>
         ^
/usr/share/gnome/help/introduction-to-gnome/C/introduction-to-gnome.xml:1744:
error: Premature end of data in tag article

^
Document is not well-formed XML:
/usr/share/gnome/help/introduction-to-gnome/C/introduction-to-gnome.xml