Docs/zh_CN: Fix the pfn calculation error in page_tables.rst
Synchronize the changes of origin document to fix the pfn value.
Reviewed-by: Yanteng Si <si.yanteng@linux.dev>
Signed-off-by: Pengyu Zhang <zpenya1314@gmail.com>
Link: https://lore.kernel.org/r/20241016141801.25487-4-zpenya1314@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
authored by