Hi!
I used google translate to understand your question, I hope I get it right.
It is actually possible to remove parts of the URL via a custom code, but it shouldn’t be too difficult.
add_filter(
'asp_results',
function ( $results ) {
foreach ( $results as $r ) {
$r->link = str_replace('/mesure-risque/', '/', $r->link);
}
return $results;
},
10,
1
);
Try adding this code via the Code Snippets plugin or to the functions.php file in your theme/child theme directory – make sure to have a full server back-up first for safety. For more details you can check the safe coding guidelines.