Document need to be updated

[iskey]

Configurations in the document on the terraform is not correct, which is:

terraform {
  required_providers {
    huaweicloudstack = {
      source  = "huaweicloudstack/huaweicloudstack"
      version = "~> 2.3.0"
    }
  }
}

should be:

terraform {
  required_providers {
    hcs = {
      source  = "huaweicloud/hcs"
      version = "~> 2.3.0"
    }
  }
}

[iskey]