add version.md path to _sidebar.md[skip ci]
- [Emergency Brake](system_management/emergency_brake.md)
- [Amend Data](system_management/amend.md)
- [Fee back](system_management/fee_back.md)
+ - [Protocol Version Management](system_management/version.md)
- JSON-RPC Guide
- [JSON-RPC Parameters and Returns](rpc_guide/rpc_types.md)
- [JSON-RPC List](rpc_guide/rpc.md)
