Update README.md

terraform_deployment/README.md

@@ -17,7 +17,7 @@ This is a standalone Terraform configutation repository that contains the follow
 
 * **variables.tf** - Contains the variable definitions for this sample
 
-* **terraform.tfvar** - Contains the variables assignments for this sample. Terraform will automatically use this file as it's main variables definition file as it uses the saved name. Note that if you change the file name you will need to specify that file on the command line with `-var-file`.
+* **terraform.tfvars** - Contains the variables assignments for this sample. Terraform will automatically use this file as it's main variables definition file as it uses the saved name. Note that if you change the file name you will need to specify that file on the command line with `-var-file`.
 Exported values will override any of the variables in both the variables.tf file and the terraform.tfvars file
 
 * **output.tf** - Contains output declarations of the resources created by this Terraform module. Terraform stores output values in the configuration's state file