docs: remove pointless list-entry

It's quite visible that there's more docs below, we don't need to spell
it out for the reader.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>

docs/contents.html

@@ -38,7 +38,6 @@
 <li><a href="relnotes.html" target="_parent">Release Notes</a>
 <li><a href="thanks.html" target="_parent">Acknowledgements</a>
 <li><a href="conform.html" target="_parent">Conformance Testing</a>
-<li>more docs below...
 </ul>
 
 <h2>Download / Install</h2>