fix: discription of outdated docs in examples and root module

Author: Rahul-4480

.header.md

@@ -9,26 +9,3 @@ This Terraform module automates the deployment of the Atlantis server on an ECS
 ![Atlantis](https://github.com/user-attachments/assets/f438c7af-9aee-415e-93a4-a1bb5a9f6c0e)
 
 ---
-
-## Prerequisites
-
-- Application secrets stored in AWS SSM Parameter Store with the following names and descriptions:
-  - `/atlantis/ATLANTIS_GH_TOKEN`: A GitHub personal access token with repo and admin:repo_hook permissions. Generate this from GitHub Developer settings.
-  - `/atlantis/ATLANTIS_GH_WEBHOOK_SECRET`: The secret used to validate GitHub webhooks. Create a random secret string for this.
-  - `/atlantis/AWS_ACCESS_KEY_ID`: The AWS Access Key ID for an IAM user with necessary permissions. Obtain this from AWS IAM user security credentials.
-  - `/atlantis/AWS_SECRET_ACCESS_KEY`: The AWS Secret Access Key for the same IAM user. Obtain this from AWS IAM user security credentials.
-  - `/atlantis/ATLANTIS_GOOGLE_CLIENT_ID`: The Client ID for Google OAuth. Obtain this from Google Cloud Console.
-  - `/atlantis/ATLANTIS_GOOGLE_CLIENT_SECRET`: The Client Secret for Google OAuth. Obtain this from Google Cloud Console.
-
-- Set up the following in the Google Cloud Console for the OAuth consent screen:
-  - **Authorized JavaScript origins**:
-    - Use the value of `ATLANTIS_URL` from your `locals.tf`, which is defined as:
-      ```hcl
-      ATLANTIS_URL = "https://${local.atlantis_url}"
-      ```
-
-  - **Authorized redirect URIs**:
-    - Use the value of `ATLANTIS_GOOGLE_REDIRECT_URI` from your `locals.tf`, which is defined as:
-      ```hcl
-      ATLANTIS_GOOGLE_REDIRECT_URI = "https://${local.atlantis_url}/oauth2/idpresponse"
-      ```

examples/complete/.header.md

@@ -1,6 +1,31 @@
+## Prerequisites
+
+Before using the Terraform configuration, ensure you have the following setup:
+
+- **Application secrets stored in AWS SSM Parameter Store** with the following names and descriptions:
+  - `/atlantis/ATLANTIS_GH_TOKEN`: A GitHub personal access token with repo and admin:repo_hook permissions. Generate this from GitHub Developer settings.
+  - `/atlantis/ATLANTIS_GH_WEBHOOK_SECRET`: The secret used to validate GitHub webhooks. Create a random secret string for this.
+  - `/atlantis/AWS_ACCESS_KEY_ID`: The AWS Access Key ID for an IAM user with necessary permissions. Obtain this from AWS IAM user security credentials.
+  - `/atlantis/AWS_SECRET_ACCESS_KEY`: The AWS Secret Access Key for the same IAM user. Obtain this from AWS IAM user security credentials.
+  - `/atlantis/ATLANTIS_GOOGLE_CLIENT_ID`: The Client ID for Google OAuth. Obtain this from Google Cloud Console.
+  - `/atlantis/ATLANTIS_GOOGLE_CLIENT_SECRET`: The Client Secret for Google OAuth. Obtain this from Google Cloud Console.
+
+- **Set up OAuth in the Google Cloud Console**:
+  - **Authorized JavaScript origins**:
+    - Use the value of `ATLANTIS_URL` from your `locals.tf`, defined as:
+      ```hcl
+      ATLANTIS_URL = "https://${var.atlantis_url}"
+      ```
+  - **Authorized redirect URIs**:
+    - Use the value of `ATLANTIS_GOOGLE_REDIRECT_URI` from your `locals.tf`, defined as:
+      ```hcl
+      ATLANTIS_GOOGLE_REDIRECT_URI = "https://${var.atlantis_url}/oauth2/idpresponse"
+      ```
 
 ## Example `tfvars` Configuration
 
+Here’s an example of how you can configure your `tfvars` file:
+
 ```hcl
 # Required Parameters
 public_subnet_ids              = ["subnet-xxxxxxxx", "subnet-xxxxxxxx"]
@@ -12,6 +37,36 @@ atlantis_repo_allowlist        = ["repo1", "repo2"]
 
 # Optional Parameters
 # thumbprint_list                = ["oidc-thumbprint-1", "oidc-thumbprint-2"]
-# atlantis_docker_image =        = "<your-custom-docker-image>"
+# atlantis_docker_image          = "<your-custom-docker-image>"
 # ecs_cluster_name               = "<your-ecs-cluster-name>"
 ```
+
+## Usage
+
+To deploy the configuration, follow these steps:
+
+1. **Initialize Terraform**:
+   ```sh
+   terraform init
+   ```
+
+2. **Plan the Deployment**:
+   ```sh
+   terraform plan
+   ```
+
+3. **Apply the Configuration**:
+   ```sh
+   terraform apply
+   ```
+
+4. **Clean Up Resources** (if needed):
+   ```sh
+   terraform destroy
+   ```
+
+   Use this command to remove all resources created by this configuration when they are no longer needed.
+
+**Note**: Be aware that applying this configuration may create resources that could incur charges on your AWS bill.
+
+---