Fixed dead link to OpenUDC

Author: evildvl

index.html

@@ -97,7 +97,7 @@ <h2>Who else is using OpenPGP.js</h2>
         <a href="https://github.com/qnrq/rc_openpgpjs/" title="Roundcube Plugin" target="_blank">
           <img class="logo" id="logo-roundcube" alt="roundcube logo" title="Roundcube Plugin" src="./images/logo_roundcube.png">
         </a>
-        <a href="http://www.openudc.org/" title="Universal Digital Currencies" target="_blank">
+        <a href="http://project.openudc.org/" title="Universal Digital Currencies" target="_blank">
           <img class="logo" id="logo-udc" alt="udc logo" title="Universal Digital Currencies" src="./images/logo_openudc.png">
         </a>
         <a href="https://encrypt.to" title="Encrypt To" target="_blank">