message: redis docs fix
diff: @@ -104,7 +104,7 @@ Environment variables are meant to store some common information about Redis.
  Here is a snippet to implement a Redis failover in case of the Redis container not being available \(for example, during maintenance\)
  -The following is inserted into Drupal 7's active `settings.php` file.
  +The following is inserted into Drupal's active `settings.php` file.
  ```php title="settings.php"
  if (getenv('LAGOON')) {
  @@ -120,8 +120,8 @@ if (getenv('LAGOON')) {
  // Ensure that there is a connection to redis.
  $client = Redis_Client::getClient();
  $response = $client->ping();
  - if (!strpos($response, 'PONG')) {
  - throw new Exception('Invalid redis response.');
  + if (!$response) {
  + throw new \Exception('Redis could be reached but is not responding correctly.');
  }
  $conf['redis_client_interface'] = 'PhpRedis';
  $conf['lock_inc'] = $contrib_path . '/redis/redis.lock.inc';
  