Add help block for multiple recipients to "Forward to Email Address" feature

As a cPanel user, I would like to see a tooltip added in the forwarders interface informing users that they can use a comma separator to set multiple recipients to help make it more clear how this can be utilized.

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As I searched for a few minutes before I found that solution, I suggest to add help block under the "Forward to Email Address" field to inform that we can set multiple recipents by using a comma.

Here is an example :

Snippet :

<div class="col-xs-offset-1 col-xs-11 col-sm-6 col-md-6 col-lg-6">
    <span id="fwdemail_clickmask">
        <input name="fwdemail" id="fwdemail" type="text" class="form-control">
    </span>
    <div class="row">
        <div class="col-md-12">
            <span class="help-block">
                 To set multpiple recipients, use comma separated email adresses.
            </span>
        </div>
    </div>
</div>