Fix BatchWatcher::recordBatch docblock copied from JobWatcher - #1753

BatchWatcher::recordBatch() carries the docblock of JobWatcher::recordJob().

/**
 * Record a job being created.
 *
 * @param  string  $connection
 * @param  string  $queue
 * @param  array  $payload
 * @return \Laravel\Telescope\IncomingEntry|null
 */
public function recordBatch(BatchDispatched $event)

The method takes a single BatchDispatched $event. recordJob($connection, $queue, array $payload) in JobWatcher.php:58 really does take those three, and its block is correct — this one was copied across and never adjusted, summary line included.

Replaced the three tags with the parameter the method actually takes, and made the summary say batch rather than job.

Docblock only, no behaviour change.