docs/zh_CN: Add block/index.rst translation

Translate .../block/index.rst into Chinese and update subsystem-apis.rst
translation.

Update the translation through commit 56cdea92ed
("Documentation/block: drop the request.rst file")

Reviewed-by: Yanteng Si <siyanteng@cqsoftware.com.cn>
Reviewed-by: WangYuli <wangyl5933@chinaunicom.cn>
Signed-off-by: ke zijie <kezijie@leap-io-kernel.com>
Signed-off-by: Alex Shi <alexs@kernel.org>

Documentation/translations/zh_CN/block/index.rst

@@ -0,0 +1,34 @@
+.. SPDX-License-Identifier: GPL-2.0
+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: Documentation/block/index.rst
+
+:翻译:
+
+ 柯子杰 ke zijie <kezijie@leap-io-kernel.com>
+
+:校译:
+
+=====
+Block
+=====
+
+.. toctree::
+   :maxdepth: 1
+
+TODOList:
+* bfq-iosched
+* biovecs
+* blk-mq
+* cmdline-partition
+* data-integrity
+* deadline-iosched
+* inline-encryption
+* ioprio
+* kyber-iosched
+* null_blk
+* pr
+* stat
+* switching-sched
+* writeback_cache_control
+* ublk

Documentation/translations/zh_CN/subsystem-apis.rst

@@ -75,7 +75,6 @@ TODOList:
 
 TODOList:
 
-* block/index
 * cdrom/index
 * target/index