Mention the Terraform JSON Configuration Syntax (#181)

* Mention the Terraform JSON Configuration Syntax

Should fix #180

* Add missing underscore

* Restyled by prettier-markdown

Co-authored-by: Restyled.io <commits@restyled.io>

Author: 0x2b3bfa0

README.md

@@ -146,6 +146,11 @@ resource "iterative_machine" "machine" {
 </p>
 </details>
 
+💡 _Alternatively, you can use the
+[JSON Terraform Configuration Syntax](https://www.terraform.io/docs/language/syntax/json.html)
+instead of the default
+[HCL](https://www.terraform.io/docs/language/syntax/configuration.html) syntax._
+
 3. Launch it!
 
 ```sh