Warning: Documentation/translations/zh_CN/kbuild/index.rst
references a file that doesn't exist: Documentation/kbuild/index

Fix this by adding its full name.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202407300812.1VvDFdxD-lkp@intel.com/
Signed-off-by: Dongliang Mu <dzm91@hust.edu.cn>
---
 Documentation/translations/zh_CN/kbuild/index.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/translations/zh_CN/kbuild/index.rst b/Documentation/translations/zh_CN/kbuild/index.rst
index b9feb56b846a..d906a4e88d0f 100644
--- a/Documentation/translations/zh_CN/kbuild/index.rst
+++ b/Documentation/translations/zh_CN/kbuild/index.rst
@@ -2,7 +2,7 @@
 
 .. include:: ../disclaimer-zh_CN.rst
 
-:Original: Documentation/kbuild/index
+:Original: Documentation/kbuild/index.rst
 :Translator: 慕冬亮 Dongliang Mu <dzm91@hust.edu.cn>
 
 ============
-- 
2.43.0