docs/zh_CN: Add power/index Chinese translation

Translate power/index.rst into Chinese.
Signed-off-by: Tang Yizhou <tangyizhou@huawei.com>
Reviewed-by: Alex Shi <alexs@kernel.org>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20211229024212.32752-3-tangyizhou@huawei.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/translations/zh_CN/index.rst

@@ -108,6 +108,7 @@ TODOList:
    cpu-freq/index
    iio/index
    infiniband/index
+   power/index
    virt/index
    sound/index
    filesystems/index
@@ -129,7 +130,6 @@ TODOList:
 * netlabel/index
 * networking/index
 * pcmcia/index
-* power/index
 * target/index
 * timers/index
 * spi/index

Documentation/translations/zh_CN/power/index.rst

+.. SPDX-License-Identifier: GPL-2.0
+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: Documentation/power/index.rst
+
+:翻译:
+
+  唐艺舟 Tang Yizhou <tangyeechou@gmail.com>
+
+========
+电源管理
+========
+
+.. toctree::
+    :maxdepth: 1
+
+TODOList:
+
+    * apm-acpi
+    * basic-pm-debugging
+    * charger-manager
+    * drivers-testing
+    * energy-model
+    * freezing-of-tasks
+    * opp
+    * pci
+    * pm_qos_interface
+    * power_supply_class
+    * runtime_pm
+    * s2ram
+    * suspend-and-cpuhotplug
+    * suspend-and-interrupts
+    * swsusp-and-swap-files
+    * swsusp-dmcrypt
+    * swsusp
+    * video
+    * tricks
+
+    * userland-swsusp
+
+    * powercap/powercap
+    * powercap/dtpm
+
+    * regulator/consumer
+    * regulator/design
+    * regulator/machine
+    * regulator/overview
+    * regulator/regulator
+
+.. only::  subproject and html
+
+   Indices
+   =======
+
+   * :ref:`genindex`