docs/zh_CN: update sysfs.txt about show() usage
Update the show() usage according to the English version. Signed-off-by: Chen Zhou <chenzhou10@huawei.com> Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com> Link: https://lore.kernel.org/r/20200610025333.84010-1-chenzhou10@huawei.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>
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