Link to vendor’s store in single product page

How can i modify the below code to a link. I want this link inside a text like “VISIT STORE”.

function getuserstoreurlfunction() {
  if( !is_user_logged_in() ) return '';
  $vendor_id   = apply_filters( 'wcfm_current_vendor_id', get_current_user_id() );
  if( !wcfm_is_vendor( $vendor_id ) ) return '';
  return wcfmmp_get_store_url( $vendor_id );
}
add_shortcode('getuserstoreurl', 'getuserstoreurlfunction');