docs/zh_CN: Add dev-tools/kcsan Chinese translation

Translate dev-tools/kcsan commit 31f605a3
("kcsan, compiler_types: Introduce __data_racy type qualifier")
into Chinese and add it in dev-tools/zh_CN/index.rst
Signed-off-by: Haoyang Liu <tttturtleruss@hust.edu.cn>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240817175151.164923-1-tttturtleruss@hust.edu.cn

Documentation/translations/zh_CN/dev-tools/index.rst

@@ -21,6 +21,7 @@ Documentation/translations/zh_CN/dev-tools/testing-overview.rst
    testing-overview
    sparse
    kcov
+   kcsan
    gcov
    kasan
    ubsan
@@ -32,7 +33,6 @@ Todolist:
  - checkpatch
  - coccinelle
  - kmsan
- - kcsan
  - kfence
  - kgdb
  - kselftest