remove inaccessible email

index.html

@@ -49,7 +49,7 @@ <h1 style="margin-top: .15em;">
       </p>
 
         <p>Follow us on twitter <a href="https://twitter.com/deem_workshop" target="_blank">@deem_workshop</a> or contact us via email at 
-        <a href="mailto:info[AT]deem-workshop[DOT]org">info[at]deem-workshop[dot]org</a>. We also provide archived websites of previous versions of the workshop: 
+        <a href="mailto:[email protected]">[email protected]</a>. We also provide archived websites of previous versions of the workshop: 
         <a href="2017/index.html" target="blank">DEEM 2017</a>, <a href="2018/index.html" target="blank">DEEM 2018</a>, <a href="2019/index.html" target="blank">DEEM 2019</a>, <a href="2020/index.html" target="blank">DEEM 2020</a>, 
         <a href="2021/index.html" target="blank">DEEM 2021</a>, <a href="2022/index.html" target="blank">DEEM 2022</a>, and <a href="2023/index.html" target="blank">DEEM 2023</a>.</p>