Remove stranded </span> from templates/base.html (#2377)

This was introduced in #2367.

Author: ambv

templates/base.html

@@ -236,7 +236,7 @@ <h1 class="site-headline">
                                 <li class="tier-1 last" aria-haspopup="true">
                                     <a href="#" class="action-trigger">Socialize</a>
                                     <ul class="subnav menu">
-                                        <li class="tier-2 element-1" role="treeitem"><a href="https://www.linkedin.com/company/python-software-foundation/"><i aria-hidden="true" class="fa fa-linkedin-square"></i></span>LinkedIn</a></li>
+                                        <li class="tier-2 element-1" role="treeitem"><a href="https://www.linkedin.com/company/python-software-foundation/"><i aria-hidden="true" class="fa fa-linkedin-square"></i>LinkedIn</a></li>
                                         <li class="tier-2 element-2" role="treeitem"><a href="https://fosstodon.org/@ThePSF"><span aria-hidden="true" class="icon-mastodon"></span>Mastodon</a></li>
                                         <li class="tier-2 element-3" role="treeitem"><a href="/community/irc/"><span aria-hidden="true" class="icon-freenode"></span>Chat on IRC</a></li>
                                         <li class="tier-2 element-4" role="treeitem"><a href="https://twitter.com/ThePSF"><span aria-hidden="true" class="icon-twitter"></span>Twitter</a></li>