Bug 1718442 - Add missing <div> opening tag to the 2.29.1 download page. r=IanN

src/releases/2.29.1.en.html

@@ -24,6 +24,7 @@
 <h1><a name="[% smversion %]">SeaMonkey [% prettyversion %]</a></h1>
 <p class="release-date">Released [% releasedate %]</p>
 
+<div class="important">
   <strong class="very-strong shout">Warning!</strong> The SeaMonkey version
   available for download from this page is outdated and may suffer from
   <a href="http://www.mozilla.org/security/known-vulnerabilities/#SeaMonkey">known