blk-throttle: fix typo in comment of throtl_adjusted_limit

lapsed time -> elapsed time
Acked-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NKemeng Shi <shikemeng@huawei.com>
Link: https://lore.kernel.org/r/20221205115709.251489-7-shikemeng@huaweicloud.comSigned-off-by: NJens Axboe <axboe@kernel.dk>

block/blk-throttle.c

@@ -129,7 +129,7 @@ static struct throtl_data *sq_to_td(struct throtl_service_queue *sq)
 /*
  * cgroup's limit in LIMIT_MAX is scaled if low limit is set. This scale is to
  * make the IO dispatch more smooth.
- * Scale up: linearly scale up according to lapsed time since upgrade. For
+ * Scale up: linearly scale up according to elapsed time since upgrade. For
  *           every throtl_slice, the limit scales up 1/2 .low limit till the
  *           limit hits .max limit
  * Scale down: exponentially scale down if a cgroup doesn't hit its .low limit