I happened to come across that one when I was looking for something similar.
Go through FTP and look into the singe-event.php file
You can find it in plugins<the-events-calendar<views
Look for the following line
<a href="<?php echo tribe_get_events_link() ?>"> <?php _e( '« All Events', 'tribe-events-calendar' ) ?></a>
Simple change the text “all events” and you should be golden ??
