add target and rel values for external links (#37475)

administrator/language/en-GB/com_installer.ini

@@ -156,7 +156,7 @@ COM_INSTALLER_MSG_INSTALL_WARNINSTALLZLIB="The installer can't continue until Zl
 COM_INSTALLER_MSG_LANGUAGES_CANT_FIND_REMOTE_MANIFEST="The installer can't get the URL to the XML manifest file of the %s language."
 COM_INSTALLER_MSG_LANGUAGES_CANT_FIND_REMOTE_PACKAGE="The installer can't get the URL to the remote %s language."
 COM_INSTALLER_MSG_LANGUAGES_NOLANGUAGES="There are no available languages to install at the moment. Please select the "Find languages" button to check for updates on the Joomla! Languages server. You will need an internet connection for this to work."
-COM_INSTALLER_MSG_LANGUAGES_TRY_LATER="Try again later or <a href=\"https://downloads.joomla.org/language-packs\">contact the language team coordinator</a>."
+COM_INSTALLER_MSG_LANGUAGES_TRY_LATER="Try again later or <a href=\"https://downloads.joomla.org/language-packs\" target=\"_blank\" rel=\"noopener noreferrer\">contact the language team coordinator</a>."
 COM_INSTALLER_MSG_N_DATABASE_ERROR_PANEL="%d Database Problems Found."
 COM_INSTALLER_MSG_N_DATABASE_ERROR_PANEL_1="One Database Problem Found."
 COM_INSTALLER_MSG_UPDATE_ERROR="Error updating %s."
@@ -176,7 +176,7 @@ COM_INSTALLER_MSG_UPDATESITES_REBUILD_SUCCESS="Update sites have been rebuilt fr
 COM_INSTALLER_MSG_UPDATESITES_REBUILD_WARNING="Update sites have been rebuilt. No extension with updates sites discovered."
 COM_INSTALLER_MSG_WARNING_NO_LANGUAGES_UPDATESERVER="The update table is not up to date. Please <a href=\"index.php?option=com_installer&view=updatesites\">rebuild your update server table</a>"
 COM_INSTALLER_MSG_WARNINGFURTHERINFO="Further information on warnings"
-COM_INSTALLER_MSG_WARNINGFURTHERINFODESC="For more information see the <a href=\"https://docs.joomla.org/Special:MyLanguage/Help4.x:Information:_Warnings\" target=\"_blank\" class=\"alert-link\">Joomla! Documentation Site</a>."
+COM_INSTALLER_MSG_WARNINGFURTHERINFODESC="For more information see the <a href=\"https://docs.joomla.org/Special:MyLanguage/Help4.x:Information:_Warnings\" class=\"alert-link\" target=\"_blank\" rel=\"noopener noreferrer\">Joomla! Documentation Site</a>."
 COM_INSTALLER_MSG_WARNINGS_FILEUPLOADISDISABLEDDESC="File uploads are required to upload extensions with the installer."
 COM_INSTALLER_MSG_WARNINGS_FILEUPLOADSDISABLED="File uploads disabled."
 COM_INSTALLER_MSG_WARNINGS_JOOMLATMPNOTSET="The Joomla temporary folder is not set."