Update SDK_tutorial_cn.md

zhifu gao

2023-06-30 2da3c79d22b639f127abce184556f15442bf01a9

 docs/m2met2/index.rst

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