typo error in README. (#213)

* typo error in README.

* Restyled by prettier-markdown

Co-authored-by: Restyled.io <commits@restyled.io>

Author: karajan1001

README.md

@@ -175,7 +175,7 @@ terraform apply --auto-approve
 | `name`              |                                          | iterative\_{UID}                                                          | Sets the instance name and related resources based on that name. In Azure, groups everything under a resource group with that name.                                                                                                                                                              |
 | `instance_hdd_size` |                                          | 10                                                                        | Sets the instance hard disk size in GB                                                                                                                                                                                                                                                           |
 | `instance_type`     | `m`, `l`, `xl`                           | `m`                                                                       | Sets the instance CPU size. You can also specify vendor specific machines in AWS i.e. `t2.micro`. [See equivalences](#Supported-vendors) table below.                                                                                                                                            |
-| `instance_gpu`      | ``, `testla`, `k80`                      | ``                                                                        | Selects the desired GPU for supported `instance_types`.                                                                                                                                                                                                                                          |
+| `instance_gpu`      | ``, `tesla`, `k80`                       | ``                                                                        | Selects the desired GPU for supported `instance_types`.                                                                                                                                                                                                                                          |
 | `ssh_private`       |                                          |                                                                           | An SSH private key in PEM format. If not provided, one private and public key wll be automatically generated and returned in `terraform.tfstate`                                                                                                                                                 |
 
 ### Machine
@@ -297,7 +297,7 @@ terraform destroy --auto-approve
 | `spot_price`        | float with 5 decimals at most            | -1                                                                        | Sets the max price that you are willing to pay by the hour. If not specified, the current spot bidding price will be used.                                                                                                                                                                    |
 | `instance_hdd_size` |                                          | 10                                                                        | Sets the instance hard disk size in GB                                                                                                                                                                                                                                                        |
 | `instance_type`     | `m`, `l`, `xl`                           | `m`                                                                       | Sets the instance CPU size. You can also specify vendor specific machines in AWS i.e. `t2.micro`. [See equivalences](#Supported-vendors) table below.                                                                                                                                         |
-| `instance_gpu`      | ``, `testla`, `k80`                      | ``                                                                        | Sets the desired GPU for supported `instance_types`.                                                                                                                                                                                                                                          |
+| `instance_gpu`      | ``, `tesla`, `k80`                       | ``                                                                        | Sets the desired GPU for supported `instance_types`.                                                                                                                                                                                                                                          |
 | `ssh_private`       |                                          |                                                                           | SSH private key in PEM format. If not provided, one private and public key wll be automatically generated and returned in terraform.tfstate                                                                                                                                                   |
 | `startup_script`    |                                          |                                                                           | Startup script also known as userData on AWS and customData in Azure. It can be expressed as multiline text using [TF heredoc syntax ](https://www.terraform.io/docs/configuration-0-11/variables.html)                                                                                       |