Fix typo

program/localization/en_US/messages.inc

@@ -97,7 +97,6 @@ $messages['selectimportfile'] = 'Please select a file to upload';
 $messages['addresswriterror'] = 'The selected address book is not writeable';
 $messages['contactaddedtogroup'] = 'Successfully added the contacts to this group';
 $messages['contactremovedfromgroup'] = 'Successfully remove contacts from this group';
-
 $messages['importwait'] = 'Importing, please wait...';
 $messages['importerror'] = 'Import failed! The uploaded file is not a valid vCard file.';
 $messages['importconfirm'] = '<b>Successfully imported $inserted contacts, $skipped existing entries skipped</b>:<p><em>$names</em></p>';

program/steps/addressbook/groups.inc

@@ -29,7 +29,7 @@ $source = get_input_value('_source', RCUBE_INPUT_GPC);
 
 if ($RCMAIL->action == 'group-addmembers') {
   if (($gid = get_input_value('_gid', RCUBE_INPUT_POST)) && ($ids = get_input_value('_cid', RCUBE_INPUT_POST))) {
-    $plugin = $RCMAIL->plugins->exec_hook('group_addmember', array('group_id' => $gid, 'ids' => $ids, 'source' => $source));
+    $plugin = $RCMAIL->plugins->exec_hook('group_addmembers', array('group_id' => $gid, 'ids' => $ids, 'source' => $source));
     
     if (!$plugin['abort'] && $CONTACTS->add_to_group($gid, $plugin['ids']))
       $OUTPUT->show_message('contactaddedtogroup');