update readme file

Author: uolter

README.md

@@ -1,12 +1,12 @@
 # Project Name
-Template useful to create a AWS infrastructure with terraform
+Template useful to create a AWS infrastructures with terraform
 
 
 ## Howo to use this template
 
 1. Create your github repository starting form this template.
 2. Configure your aws cli and set the [credentials](https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html). Also refer the conflunece page to work with [AWS SSO](https://pagopa.atlassian.net/wiki/spaces/DEVOPS/pages/466846955/AWS+-+Users+groups+and+roles#SSO-with-GSuite).
-3. The __src/init__ directory contains the terraform code to setup the S3 backend the Dynamodb lock table and the iam role to use in the github actions
+3. The __src/init__ directory contains the terraform code to setup the S3 backend, the Dynamodb lock table, github openid connection and the iam role to use in the github actions
 4. The __src/main__ directory cointains the terraform code to setup the core infrastructure.
 5. The __.github/workflows__ directory contains two yaml files to run a terraform plan and apply actions. They need a github environment secret to be created: IAM_ROLE (see below.)