update README.md

Author: anmolnagpal

README.md

@@ -14,7 +14,7 @@
 <p align="center">
 
 <a href="https://www.terraform.io">
-  <img src="https://img.shields.io/badge/Terraform-v0.13-green" alt="Terraform">
+  <img src="https://img.shields.io/badge/Terraform-v0.14-green" alt="Terraform">
 </a>
 <a href="LICENSE.md">
   <img src="https://img.shields.io/badge/License-MIT-blue.svg" alt="Licence">