Custom Post_id

Hello,

I would have liked to change, the name in the links is it possible with a snippet to do it, I can not replace it.

today I have :

https://monsite.com/cr3ativsponsor/stedurand/

I would like :

https://monsite.com/partenaires/stedurand/

I tried this, but without success:

add_action("register_post_type", "customize_sponsorts_post_type");
function customize_sponsorts_post_type( $args ) {
   if ( 'cr3ativsponsor' === $post_type ) {
   if(!isset($args["rewrite"])) {
      $args["rewrite"] = array();
   }
   
   $args["rewrite"]["slug"] = "partenaires";
   return $args;
}

I will have the same question, for the taxonomy

Thank you in advance