add missing title on annoucement page

bin/createReleaseEntry

@@ -30,6 +30,8 @@ $security = isset($opts['security']) ? 'security' : 'bug fix';
 
 // Create content.
 $template = <<<EOD
+<h1>PHP $version Release Announcement</h1>
+
 <p>The PHP development team announces the immediate availability of PHP $version. This is a $security release.</p>
 
 <p>All PHP $branch users are encouraged to upgrade to this version.</p>