docs(api): refresh sandbox source link

website/zh-CN/api/harness/sandbox.md

@@ -21,4 +21,4 @@ Wrap `argv` so it executes confined under `policy` on this host; the caller spaw
 
 **Returns** the argv to spawn instead, plus the enforcement completeness the selected backend achieves for it.
 
-[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/sandbox/sandbox/src/index.ts#L127)
+[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/sandbox/sandbox/src/index.ts#L128)