FIX #16843

https://fontawesome.com/how-to-use/on-the-web/setup/upgrading-from-version-4

fa-mail-forward => fa-share

htdocs/core/lib/functions.lib.php

@@ -3337,7 +3337,7 @@ function img_picto($titlealt, $picto, $moreatt = '', $pictoisfullpath = false, $
 				'shipment'=>'dolly', 'stock'=>'box-open', 'stats' => 'chart-bar', 'split'=>'code-branch', 'supplier_invoice'=>'file-invoice-dollar', 'technic'=>'cogs', 'ticket'=>'ticket-alt',
 				'title_setup'=>'tools', 'title_accountancy'=>'money-check-alt', 'title_bank'=>'university', 'title_hrm'=>'umbrella-beach',
 				'title_agenda'=>'calendar-alt',
-				'uparrow'=>'mail-forward', 'vcard'=>'address-card',
+				'uparrow'=>'share', 'vcard'=>'address-card',
 				'jabber'=>'comment-o',
 				'website'=>'globe-americas'
 			);