move terraform-kubestack to modules section

Signed-off-by: Rui Chen <rui@chenrui.dev>

README.md

@@ -195,6 +195,7 @@ For more Community Modules not listed here please see the [Terraform Module Regi
 - [terraform-ecs-jenkins](https://github.com/shuaibiyy/terraform-ecs-jenkins) - Provisions Jenkins on AWS ECS using Terraform.
 - [terraform-gce-atlantis](https://github.com/bschaatsbergen/terraform-gce-atlantis) - Creates Terraform configurations for running [Atlantis](https://runatlantis.io) on Google Compute Engine.
 - [terraform-google-project-factory](https://github.com/terraform-google-modules/terraform-google-project-factory) - Opinionated Google Cloud Platform project creation and configuration with Shared VPC, IAM, APIs, etc.
+- [terraform-kubestack](https://github.com/kbst/terraform-kubestack) - Kubestack is a framework for Kubernetes platform engineering teams to define the entire cloud native stack in one Terraform code base and continuously evolve the platform safely through GitOps.
 - [terraform-linode-k8s](https://registry.terraform.io/modules/linode/k8s/linode/) - Installs Kubernetes on Linode Instances.
 - [terraform-static-website-s3-cloudfront](https://github.com/sjevs/terraform-static-website-s3-cloudfront) - Creates static websites on AWS S3 & Cloudfront based on variables.
 - [tf_aws_bastion_s3_keys](https://github.com/terraform-community-modules/tf_aws_bastion_s3_keys) - Creates bastion hosts on AWS EC2.
@@ -337,7 +338,6 @@ For more Community Modules not listed here please see the [Terraform Module Regi
 - [terraform-docs](https://github.com/terraform-docs/terraform-docs) - Quick utility to generate docs from terraform modules.
 - [terraform-graph-beautifier](https://github.com/pcasteran/terraform-graph-beautifier) - Command line tool allowing to convert the barely usable output of the terraform graph command to something more meaningful and explanatory.
 - [terraform-iam-policy-validator](https://github.com/awslabs/terraform-iam-policy-validator) - CLI validates AWS IAM Policies in a Terraform template against AWS IAM best practices.
-- [terraform-kubestack](https://github.com/kbst/terraform-kubestack) - Kubestack is a framework for Kubernetes platform engineering teams to define the entire cloud native stack in one Terraform code base and continuously evolve the platform safely through GitOps.
 - [terraform-landscape](https://github.com/coinbase/terraform-landscape) - *(only 0.11 and earlier)* Improve Terraform's plan output to be easier to read and understand.
 - [terraform-operator](https://github.com/isaaguilar/terraform-operator.git) - A Kubernetes CRD to handle Terraform operations.
 - [terraform-plan-parser](https://github.com/lifeomic/terraform-plan-parser) - Command line utility and JavaScript API for parsing stdout from `terraform plan` and converting it to JSON. :ghost: