Article page showing HTML tags in SharePoint 2013

Article page showing HTML tags, use below PowerShell to fix as mentioned here :

http://labs.steveottenad.com/publishing-columns-show-escaped-html-in-sharepoint-2010/

Add-PSSnapin "Microsoft.SharePoint.PowerShell"
$web = Get-SPWeb "https://contoso.com/sites/mysite/it/"
$list = $web.GetPublishingPages();

foreach ($page in $list.Items)
{
    if ($page.Title -eq "Testing123")
    {
        [Microsoft.SharePoint.Publishing.Fields.HtmlField]$field = [Microsoft.SharePoint.Publishing.Fields.HtmlField]$list.Fields[“Page Content”]
        $field.RichText = $true
        $field.RichTextMode = [Microsoft.SharePoint.SPRichTextMode]::FullHtml
        $field.Update()
        break;
    }
}
$list.Update()
$web.dispose()

Hope this helps!!!