[PATCH] erofs: update documentation

[Chao Yu]

On 2022/11/30 17:56, Gao Xiang wrote:
> - Refine highlights for main features;
> 
> - Add multi-reference pclusters and fragment description.
> 
> Signed-off-by: Gao Xiang <hsiangkao at linux.alibaba.com>

Reviewed-by: Chao Yu <chao at kernel.org>

Thanks,