Update facade docblocks

Author: taylorotwell

src/Illuminate/Support/Facades/Response.php

@@ -11,7 +11,7 @@
  * @method static \Illuminate\Http\JsonResponse json(mixed $data = [], int $status = 200, array $headers = [], int $options = 0)
  * @method static \Illuminate\Http\JsonResponse jsonp(string $callback, mixed $data = [], int $status = 200, array $headers = [], int $options = 0)
  * @method static \Symfony\Component\HttpFoundation\StreamedResponse eventStream(\Closure $callback, array $headers = [], \Illuminate\Http\StreamedEvent|string|null $endStreamWith = '</stream>')
- * @method static \Symfony\Component\HttpFoundation\StreamedResponse stream(callable $callback, int $status = 200, array $headers = [])
+ * @method static \Symfony\Component\HttpFoundation\StreamedResponse stream(callable|null $callback, int $status = 200, array $headers = [])
  * @method static \Symfony\Component\HttpFoundation\StreamedJsonResponse streamJson(array $data, int $status = 200, array $headers = [], int $encodingOptions = 15)
  * @method static \Symfony\Component\HttpFoundation\StreamedResponse streamDownload(callable $callback, string|null $name = null, array $headers = [], string|null $disposition = 'attachment')
  * @method static \Symfony\Component\HttpFoundation\BinaryFileResponse download(\SplFileInfo|string $file, string|null $name = null, array $headers = [], string|null $disposition = 'attachment')