update link as the paper has moved... same cert for new domains as parent of old..

strobe/www/specs/index.html

@@ -837,7 +837,7 @@
     
     <h3 id="ops.impl.runf">Duplexing and running <var>F</var></h3>
     <p><span class="strobe">Strobe</span> is a
-        <a href="https://sponge.noekeon.org/SpongeDuplex.pdf">duplex construction</a>,
+        <a href="https://keccak.team/files/SpongeDuplex.pdf">duplex construction</a>,
         so its core routine <code>_duplex()</code> is somewhat unsurprising.  This
         routine takes input data and three binary arguments:
         <var>cbefore</var>, <var>cafter</var> and <var>forceF</var>.