docs: zh_CN: fix location of oops-tracing.txt

This file was merged with bug-hunting. Make the translation
to point for its new location.

Fixes: f226e460 ("admin-guide: merge oops-tracing with bug-hunting")
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>