fixed missing language key

Author: chmst

administrator/language/en-GB/com_joomlaupdate.ini

@@ -17,6 +17,7 @@ COM_JOOMLAUPDATE_CONFIG_AUTOMATED_UPDATES_LABEL="Automated Updates"
 COM_JOOMLAUPDATE_CONFIG_AUTOUPDATE_DESC="Automatically update Joomla to the latest version when it is available."
 COM_JOOMLAUPDATE_CONFIG_AUTOUPDATE_LABEL="Automated Update"
 COM_JOOMLAUPDATE_CONFIG_AUTOUPDATE_UPDATE_EMAIL_DESCRIPTION="All Super Users and all users in the selected groups will receive the emails if they have the receive system emails option enabled in their user profile."
+COM_JOOMLAUPDATE_CONFIG_AUTOUPDATE_UPDATE_EMAIL_LABEL="Send Email to User Groups"
 COM_JOOMLAUPDATE_CONFIG_BACKUPCHECK_DESC="Shows the checkbox to confirm you have taken a backup and you're ready to update in the final step before the update is actually applied."
 COM_JOOMLAUPDATE_CONFIG_BACKUPCHECK_LABEL="Confirm Backup Checkbox"
 COM_JOOMLAUPDATE_CONFIG_CUSTOMURL_LABEL="Custom URL"