docs/zh_CN: Add tpm index Chinese translation

docs/zh_CN: Add tpm index Chinese translation

Translate .../security/tpm/index.rst into Chinese

Update the translation through commit 1d479e3cd652
("Documentation: tpm: Add TPM security docs toctree entry")

Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Shuo Zhao <zhaoshuo@cqsoftware.com.cn>
Reviewed-by: Yanteng Si <si.yanteng@linux.dev>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/900d91e8a2c7c35259005de5cff99e7bb4e7adf6.1737603330.git.zhaoshuo@cqsoftware.com.cn