Invalid validation error message when running terraform init in template/aws

[brianpham]

Seeing this error when following the instructions to install the AWS exporter

│ Error: Invalid validation error message
│ 
│   on .terraform/modules/port_aws_exporter/variables.tf line 70, in variable "schedule_state":
│   70:     error_message = "Schedule state must be 'ENABLED' or 'DISABLED'"
│ 
│ The validation error message must be at least one full sentence starting with an uppercase letter and ending with a period or question mark.
│ 
│ Your given message will be included as part of a larger Terraform error message, written as English prose. For broadly-shared modules we suggest using a similar writing style so that the overall result will be consistent.

[brianpham]

Created a PR to fix the issue port-labs/terraform-aws-port-exporter#10