// Filters, remove ones that you do not need
add_filter('tribe_get_event_website_link_label', 'modify_event_website_link_label');
add_filter('tribe_get_organizer_website_link_label', 'modify_organizer_website_link_label');
add_filter('tribe_get_venue_website_link_label', 'modify_venue_website_link_label');

function modify_event_website_link_label ($url) {
	return 'Event Website »';
}

function modify_organizer_website_link_label ($url) {
	return 'Organizer Website »';
}

function modify_venue_website_link_label ($url) {
	return 'Venue Website »';
}