update doc

README.md

@@ -52,6 +52,6 @@ The below property names can be changed in the following ways
 | property name                   | environment variable            | default value                                    | description                                                                                                           |
 |---------------------------------|---------------------------------|--------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------|
 | terraform_binary_path           | TERRAFORM_BINARY_PATH           | Terraform available on syspath                   | The path to the terraform binary                                                                                      |
-| terraform.root.module.directory | TERRAFORM.ROOT.MODULE.DIRECTORY | /tmp on Linux<br/>\AppData\Local\Temp on Windows | The path to the parent directory where all terraform module directories will be stored at as subdirs                  |
+| terraform.root.module.directory | TERRAFORM_ROOT_MODULE_DIRECTORY | /tmp on Linux<br/>\AppData\Local\Temp on Windows | The path to the parent directory where all terraform module directories will be stored at as subdirs                  |
 | log.terraform.stdout.stderr     | LOG_TERRAFORM_STDOUT_STDERR     | true                                             | Controls if the command execution output must be logged. If disabled, the output is only returned in the API response |
 | terraform.log.level             | TERRAFORM_LOG_LEVEL             | INFO                                             | Controls the log level of the terraform binary. Allowed values are INFO, DEBUG, TRACE, WARN and ERROR                 |                                                                                                                       |