docs/zh_CN: Update the translation of msi-howto to 6.1-rc8

Update to commit 88614075 ("Documentation: PCI: Add reference
to PCI/MSI device driver APIs")

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Wu XiangCheng <bobwxc@email.cn>
Link: https://lore.kernel.org/r/a47eb583fc396cd936a27749c318557284855936.1670642548.git.siyanteng@loongson.cn


Signed-off-by: Jonathan Corbet <corbet@lwn.net>