Adds RDA DE 2022 contribution

services/software/communities.html

@@ -50,8 +50,9 @@ excerpt:
             So far we contributed to the following conferences:
         </p>
         <ul>
-            <li><a href="https://de-rse.org/de/conf2019/">deRSE19</a></li>
+            <li><a href="https://indico.desy.de/event/31380/contributions/115816/">RDA DE 2022</a></li>
             <li><a href="https://de-rse.org/deRSE20/">deRSE20</a></li>
+            <li><a href="https://de-rse.org/de/conf2019/">deRSE19</a></li>
             <li><a href="https://sorse.github.io/">SORSE</a></li>
         </ul>
     </div>