docs/zh_CN: core-api: Add this_cpu_ops Chinese translation

Translate core-api/this_cpu_ops.rst into Chinese.

Last English version used:

commit c9b54d6f ("docs: move other kAPI documents to core-api").
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Wu XiangCheng <bobwxc@email.cn>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/f9a8cb188bc35811d7f074f9d5f607f5a48c6503.1666171735.git.zhoubinbin@loongson.cnSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/translations/zh_CN/core-api/index.rst

@@ -48,12 +48,12 @@
    circular-buffers
    generic-radix-tree
    packing
+   this_cpu_ops
 
 Todolist:
 
 
 
-   this_cpu_ops
    timekeeping
    errseq