Merge pull request #690 from scala/fix687

Fixes #687

Author: heathermiller

_layouts/downloadpage.html

@@ -10,9 +10,9 @@
           <span>{{page.release_version}}</span>
         </div>
         <ul>
-          <li><a href="/download/changelog/">Release Notes</a></li>
+          <li><a href="https://github.com/scala/scala/releases">Release Notes</a></li>
           <li class="dot">•</li>
-          <li><a href="/download/changelog/">Changelog</a></li>
+          <li><a href="{{ site.baseurl }}/news#announcements--changelog">Changelog</a></li>
         </ul>
       </div>
       <div class="main-download">