Sitecore Powershell - Update field values in all rich text items

UpdateFieldValues.ps1

$root = gi master:// -id "{0C3015B8-77AD-44DC-9633-2AD76489483A}"
$items = $root | ls -r | %{$item = $_; $_.Fields  | ?{$_.TypeKey -eq "rich text"} }
#$items.Count
foreach($i in $items){
    if($temp){
        clear-variable("temp")
    }
    if($replaced){
        clear-variable("replaced")
    }

    $replaced = $i.Value -replace 'https://randomlink.com', 'https://newlink.com'
    $temp = $i.Item
    $temp.Editing.BeginEdit()
    $temp.Fields[$i.Name].Value = $replaced
    $temp.Editing.EndEdit()
}

Thank you, it was helpful!