docs(sidebar) update social-embed link

Author: tony

docs/_templates/sidebar/projects.html

@@ -49,7 +49,7 @@
   <p class="indented-block">
     <span class="project-name">web</span>
     <span class="indent">
-      <a class="internal" href="https://social-embed.git-pull.com" class="current">social-embed</a>
+      <a class="internal" href="https://social-embed.org" class="current">social-embed</a>
     </span>
   </p>
 </div>