docs: fix markdown formatting issue

Author: sgtoj

README.md

@@ -21,8 +21,6 @@ zero-trust solution by Gravitational.
 Deploy it using the block below. For the first time deployments, it make take 10
 minutes before the web portal is available.
 
-```hcl
-
 ```hcl
 module "teleport_cluster" {
   source  = "cruxstack/teleport-cluster/aws"