fix terraform doc formatting

Author: gAmUssA

docs/TERRAFORM.adoc

@@ -1,6 +1,6 @@
 = Provisioning Confluent Cloud Infrastructure
 
-Let's assume you have completed the following prereqs:
+== Prerequisites
 
 * https://confluent.cloud[Confluent Cloud Account]
 * https://docs.confluent.io/confluent-cli/current/install.html[Confluent CLI]
@@ -12,37 +12,44 @@ Let's assume you have completed the following prereqs:
 Log into Confluent Cloud and find the API Key and API Secret. 
 Use the commands below to set environment variables needed to authenticate to Confluent Cloud:
 
-```shell
+[source,bash]
+.Confluent Cloud API Keys
+----
 export CONFLUENT_CLOUD_API_KEY=<API KEY>
 export CONFLUENT_CLOUD_API_SECRET=<API SECRET>
-```
+----
 
 == Execute Terraform Manifests
 
-The terraform manifests require the Confluent Cloud organization ID in order to provision infrastructure. 
+The terraform manifests require the Confluent Cloud organization ID to provision infrastructure. 
 This can be found in the Confluent Cloud console in the "Organization Settings" and exported to an environment variable:
 
 image::org-id.jpg[]
 
 image::org-id-2.jpg[]
 
-```bash
+[source,bash]
+.org-id.sh
+----
 export TF_VAR_org_id=<ORG ID VALUE FROM CONSOLE>
-```
+----
 
 This value can also be queried by using the Confluent CLI to query your account, piping the result to a `jq` query and using that value in a `TF_VAR_`:
 
-```bash
+[source,bash]
+----
 export TF_VAR_org_id=$(confluent organization list -o json | jq -c -r '.[] | select(.is_current)' | jq '.id')
-```
+----
 
 From this directory, execute the following commands:
 
-```bash
-terraform init 					
-terraform plan -out "tfplan" 			
+[source,bash]
+.terraform.sh
+----
+terraform init
+terraform plan -out "tfplan"
 terraform apply 					
-```
+----
 
 Once completed, verify the infrastructure is created in the Confluent Cloud console.
 
@@ -51,16 +58,19 @@ Once completed, verify the infrastructure is created in the Confluent Cloud cons
 In the Table API exercises, we will need API keys and secrets to connect Flink to Confluent Cloud. 
 This `terraform output` command will create a file with those parameters:
 
-```bash
+[source,bash]
+----
 terraform output -json \
  | jq -r 'to_entries | map( {key: .key|tostring|split("_")|join("."), value: .value} ) | map("client.\(.key)=\(.value.value)") | .[]' \
  | while read -r line ; do echo "$line"; done > ../common/utils/src/main/resources/cloud.properties
-```
+----
 
 == Teardown
 
 When the workshop is complete, run the following command to destroy all Confluent Cloud assets:
 
-```bash
+[source,bash]
+----
 terraform destroy --auto-approve
-```
+----
+