[hotfix][doc] no space affect reading buffer doc (#3739)

I hereby agree to the terms of the CLA available at: https://yandex.ru/legal/cla/?lang=en

Backport of #3738 .
This commit is contained in:
谢磊 2018-12-04 03:38:27 +08:00 committed by Ivan Blinkov
parent 9805c4ae39
commit d84df9c283