Causes Fatal Error on PHP 8

[briannehinchliffe]

When updating our WooTheme site to PHP 8 we get this fatal error:

Fatal error: Uncaught ValueError: Unknown format specifier "a" in /Users/briannehinchliffe/Sites/lindas-closet/app/public/wp-content/plugins/features-by-woothemes/classes/class-woothemes-features.php:87

We tracked this down in the files and this is the line:
'search_items' => sprintf( __( 'Search %a', 'woothemes-features' ), __( 'Features', 'woothemes-features' ) ),

I'm guessing the %a here is supposed to be %s.