Fix https link

htdocs/main.inc.php

@@ -1025,7 +1025,7 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
         print '<link rel="shortcut icon" type="image/x-icon" href="'.$favicon.'"/>'."\n";
         if (empty($conf->global->MAIN_OPTIMIZEFORTEXTBROWSER) && ! GETPOST('textbrowser')) print '<link rel="top" title="'.$langs->trans("Home").'" href="'.(DOL_URL_ROOT?DOL_URL_ROOT:'/').'">'."\n";
         if (empty($conf->global->MAIN_OPTIMIZEFORTEXTBROWSER) && ! GETPOST('textbrowser')) print '<link rel="copyright" title="GNU General Public License" href="http://www.gnu.org/copyleft/gpl.html#SEC1">'."\n";
-        if (empty($conf->global->MAIN_OPTIMIZEFORTEXTBROWSER) && ! GETPOST('textbrowser')) print '<link rel="author" title="Dolibarr Development Team" href="http://www.dolibarr.org">'."\n";
+        if (empty($conf->global->MAIN_OPTIMIZEFORTEXTBROWSER) && ! GETPOST('textbrowser')) print '<link rel="author" title="Dolibarr Development Team" href="https://www.dolibarr.org">'."\n";
 
         // Displays title
         $appli=constant('DOL_APPLICATION_TITLE');