DOC: update how we display links to previous versions

Co-authored-by: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>

Author: tacaswell

versions.html

@@ -1,9 +1,6 @@
-Other versions are available:
-
-<ul>
-  <li><a href="/3.2.1/index.html">3.2.1</a> Stable version.</li>
-  <li><a href="/2.2.5/index.html">2.2.5 LTS</a> LTS version.</li>
-  <li><a href="/3.1.3/index.html">3.1.3</a> Older stable version.</li>
-  <li><a href="/devdocs/index.html">development</a> Latest git master (unstable)</li>
-
-</ul>
+<p><strong>Latest release</strong><br>
+3.2.1: <a href="https://matplotlib.org/3.2.1/index.html">docs</a> | <a href="https://matplotlib.org/3.2.0/users/whats_new.html">changelog</a></p>
+<p><strong>Last release for Python 2</strong><br>
+2.2.5: <a href="https://matplotlib.org/2.2.5/index.html">docs</a> | <a href="https://matplotlib.org/2.2.5/users/whats_new.html">changelog</a></p>
+<p><strong>Development version</strong><br>
+<a href="https://matplotlib.org/devdocs/index.html">docs</a></p>