Limit review lenght

In the plugin settings:

If I’m not wrong, this way I limit the Excerpt lenght, but the review itself has no lengh limit

/**
 * Limit reviews to 100 characters (change the number to your desired length)
 * Paste this in your active theme's functions.php file.
 * @param array $rules
 * @return array
 */
add_filter( 'site-reviews/validation/rules', function( $rules ) {
    $rules['content'] = 'required|max:100';
    return $rules;
});

Thank you!