Update mailing list-related links

Changes as requested

Author: ferdnyc

speed_python/templates/about.html

@@ -68,12 +68,12 @@ <h4>The Hosting</h4>
 <h4>Resources</h4>
 <ul>
     <li>
-        <a href="https://mail.python.org/mailman/listinfo/speed" target="_blank">The mailing list</a>
+        <a href="https://mail.python.org/mailman3/lists/speed.python.org/" target="_blank">The mailing list</a>
         is here - if you want to volunteer to help out with the project, this
         is the place to start.
     </li>
     <li>
-        <a href="https://mail.python.org/pipermail/speed/" target="_blank">The list archives</a>
+        <a href="https://mail.python.org/archives/list/speed@python.org/" target="_blank">The list archives</a>
     </li>
 </ul>
 
@@ -89,6 +89,6 @@ <h3>About Codespeed</h3>
 <p>Wiki: <a href="https://github.com/tobami/codespeed/wiki">github.com/tobami/codespeed/wiki</a></p>
 <h3>Contact</h3>
 <p>For problems or suggestions about this website write to
-    <a href="https://mail.python.org/mailman/listinfo/speed">the Python Speed mailing list</a></p>
+    <a href="https://mail.python.org/mailman3/lists/speed.python.org/">the Python Speed mailing list</a></p>
 </div>
 {% endblock %}