Update readme_cn.md

zhifu gao

2023-06-29 c7d5a94ae28d76b86497e59cdd92498f6937677c

 docs/m2met2/index.rst

@@ -18,5 +18,6 @@
   ./Track_setting_and_evaluation
   ./Baseline
   ./Rules
   ./Challenge_result
   ./Organizers
   ./Contact