[Enhancement]: 扩展性的实际验证案例

### Is there an existing issue about this enhancement?

- [X] I have checked the existing issues.

### Describe the enhancement.

https://docs.matrixorigin.cn/dev/MatrixOne/Overview/feature/scalability/#_2

这篇文档还缺了一个实际验证的案例。比如从1个节点开始，到N个节点。
跑TPCC/TPCH/sysbench可以体现出来性能的扩展性，需要把整个过程和结果描述清楚。