Changed API Username GUID > User ID GUID in README

Author: connorl-docusign

README.md

@@ -61,7 +61,7 @@ For a list of code examples that use the Admin API, select the Ruby tab under [E
 
    To use [Authorization Code Grant](https://developers.docusign.com/platform/auth/authcode/), you will need an integration key and a secret key. See [Installation steps](#installation-steps) for details.
 
-   To use [JWT Grant](https://developers.docusign.com/platform/auth/jwt/), you will need an integration key, an RSA key pair, and the API Username GUID of the impersonated user. See [Installation steps for JWT Grant authentication](#installation-steps-for-jwt-grant-authentication) for details.
+   To use [JWT Grant](https://developers.docusign.com/platform/auth/jwt/), you will need an integration key, an RSA key pair, and the User ID GUID of the impersonated user. See [Installation steps for JWT Grant authentication](#installation-steps-for-jwt-grant-authentication) for details.
 
    For both authentication flows:
 
@@ -110,7 +110,7 @@ Also, in order to select JSON Web Token authentication in the launcher, in confi
    `cd <Quickstart folder>` or `cd code-examples-ruby`
 1. Install the dependencies: `bundler install`
 1. To configure the launcher for [JWT Grant](https://developers.docusign.com/platform/auth/jwt/) authentication, create a copy of the file config/appsettings.example.yml and save the copy as config/appsettings.yml.
-   1. Add your API Username. On the [Apps and Keys](https://admindemo.docusign.com/authenticate?goTo=apiIntegratorKey) page, under **My Account Information**, copy the **API Username** GUID and save it in appsettings.yml as your `impersonated_user_guid`.
+   1. Add your User ID. On the [Apps and Keys](https://admindemo.docusign.com/authenticate?goTo=apiIntegratorKey) page, under **My Account Information**, copy the **User ID** GUID and save it in appsettings.yml as your `impersonated_user_guid`.
    1. Add your integration key. On the [Apps and Keys](https://admindemo.docusign.com/authenticate?goTo=apiIntegratorKey) page, under **Apps and Integration Keys**, choose the app to use, then select **Actions** > **Edit**. Under **General Info**, copy the **Integration Key** GUID and save it in appsettings.yml as your `jwt_integration_key`.
    1. Generate an RSA key pair, if you don’t already have one. Under **Authentication**, select **+ GENERATE RSA**. Copy the private key and save it in a new file named config/docusign_private_key.txt.
    1. Add the launcher’s redirect URI. Under **Additional settings**, select **+ ADD URI**, and set a redirect URI of http://localhost:3000/auth/docusign/callback. Select **SAVE**.