docs/website/news.html: correct 2022.05.1 entry

This was naturally 2022.05.1, NOT 2021.05.1.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/website/news.html

@@ -72,7 +72,7 @@
     <div class="timeline-badge"><i class="glyphicon glyphicon-thumbs-up"></i></div>
     <div class="timeline-panel">
       <div class="timeline-heading">
-	<h4 class="timeline-title">2021.05.1 released</h4>
+	<h4 class="timeline-title">2022.05.1 released</h4>
 	<p><small class="text-muted"><i class="glyphicon glyphicon-time"></i>24 July 2022</small></p>
       </div>
       <div class="timeline-body">