website/news.html: left align 2018.02.12 release announcement

We use alternative left/right alignment of the announcement boxes.

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

docs/website/news.html

@@ -9,7 +9,7 @@
 <h2>News</h2>
 <ul class="timeline">
 
-  <li class="timeline-inverted">
+  <li>
     <div class="timeline-badge"><i class="glyphicon glyphicon-thumbs-up"></i></div>
     <div class="timeline-panel">
       <div class="timeline-heading">