Add proper "supported by" to table

Author: Dorthu

README.md

@@ -44,7 +44,7 @@ Attribute | Location | Type | Supported By | Explanation
 `x-linode-grant` | method | string | | The level of access a user must have in order to call this endpoint.
 `x-linode-cli-display` | schema properties | integer | linode-cli | If truthy, this property will be displayed in the Linode CLI.  The numeric value determines the ordering of the displayed columns, left to right.
 `x-linode-cli-color` | schema properties | object | linode-cli | A mapping of possible property values to color codes understood by python's [colorclass module](https://pypi.python.org/pypi/colorclass).  Must include a `default_`, used for any value that doesn't match one of the keys.
-`x-linode-cli-format` | schema properties | string | Overrides the value of the "format" field for this property, but for the CLI only.  Valid values are `file` and `json`.
+`x-linode-cli-format` | schema properties | string | linode-cli |  Overrides the value of the "format" field for this property, but for the CLI only.  Valid values are `file` and `json`.
 `x-linode-cli-command` | path | string | linode-cli | The command group the methods of this path fall into when generating commands in the `linode-cli <command> <action>` format.
 `x-linode-cli-action` | method | string | linode-cli | The action this method will be mapped to when generating commands in the `linode-cli <command> <action>` format.
 `x-linode-cli-skip` | method | boolean | linode-cli | If true, the CLI will not expose this action.