test published: true missing field

Author: mdxp

source/_posts/2009-11-03-centos-5-4-released.markdown

@@ -1,5 +1,6 @@
 ---
 author: marius-ducea
+published: true
 date: '2009-11-03 02:41:01'
 layout: post
 slug: centos-5-4-released
@@ -16,6 +17,8 @@ tags:
 Almost two months after RHEL5.4, **Centos 5.4** was [released](http://lists.centos.org/pipermail/centos-announce/2009-October/016195.html) on the **21st October**. This version includes various changes into the virtualization field and it includes support for **KVM** (kernel-based virtual machine) hypervisor and the **Xen** hypervisor.
 
 Also this release features many bug fixes and security updates, and should be an easy upgrade for users running centos5.x:
-`yum update`
+```
+yum update
+```
 
 For the full list of packages changed/added please see the centos5.4 release notes: [http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.4](http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.4)