Fix regression in Generate SSL HTML template

web/templates/pages/generate_ssl.html

@@ -66,6 +66,7 @@
 						<tr>
 							<td class="vst-text" style="padding: 12px 0 0 0;">
 								<?=_('Email');?>
+								<span class="optional">(<?php print _('optional');?>)</span>
 							</td>
 						</tr>
 						<tr>