Document how to use this module using HTTPS

Describe the bug Using Git:SSH requires for the local environment to have a SSH Key setup and linked to a GitHub user. This is often not the case for CI environments.

Add documentation or update existing documentation to use HTTPS as source for the module.

To Reproduce Define module in Terraform code:

module "eks" {
  source  = "git@github.com:clowdhaus/terraform-aws-eks-v20-migrate.git?
ref=c356ac8ec211604defaaaad49d27863d1e8a1391"
}

Run terraform init:

Error: Failed to download module
│ 
│   on main.tf line 29:
│   29: module "eks" {
│ 
│ Could not download module "eks" (main.tf:29) source code from "git::ssh://git@github.com/clowdhaus/terraform-aws-eks-v20-migrate.git?ref=c356ac8ec211604defaaaad49d27863d1e8a1391": error downloading
│ 'ssh://git@github.com/clowdhaus/terraform-aws-eks-v20-migrate.git?ref=c356ac8ec211604defaaaad49d27863d1e8a1391': /usr/bin/git exited with 128: Cloning into '.terraform/modules/eks'...
│ git@github.com: Permission denied (publickey).
│ fatal: Could not read from remote repository.
│ 
│ Please make sure you have the correct access rights
│ and the repository exists.

Expected behavior Documentation provides a working steps/example.

Screenshots N/A

Desktop (please complete the following information): N/A

Smartphone (please complete the following information): N/A

Additional context

source = "github.com/clowdhaus/terraform-aws-eks-v20-migrate.git?ref=c356ac8ec211604defaaaad49d27863d1e8a1391" can be used in examples instead.

clowdhaus / terraform-aws-eks-migrate-v19-to-v20

Document how to use this module using HTTPS #1