[doc/1-line change] default stage3_param_persistence_threshold is wrong in the doc (#5073)
The default value should be `1e5` as in
[config.py](https://github.com/microsoft/DeepSpeed/blob/2eafe41be7049721b77c2f2b0ee702fea1702239/deepspeed/runtime/zero/config.py#L200).
Signed-off-by: byhsu <byhsu@linkedin.com>
Co-authored-by: byhsu <byhsu@linkedin.com>
Co-authored-by: Logan Adams <114770087+loadams@users.noreply.github.com>