docs: ui option for adding licenses (#9322)

docs/enterprise.md

@@ -20,11 +20,20 @@ paid license. [Contact Sales](https://coder.com/contact) for pricing or
 | Deployment      | [Isolated Terraform Runners](./admin/provisioners.md)                                |     ❌      |     ✅     |
 | Deployment      | [Workspace Proxies](./admin/workspace-proxies.md)                                    |     ❌      |     ✅     |
 
-> Previous plans to restrict OIDC and Git Auth features in OSS have been removed
-> as of 2023-01-11
-
 ## Adding your license key
 
+There are two ways to add an enterprise license to a Coder deployment: In the
+Coder UI or with the Coder CLI.
+
+### Coder UI
+
+Click Deployment, Licenses, Add a license then drag or select the license file
+with the `jwt` extension.
+
+![Add License UI](./images/add-license-ui.png)
+
+### Coder CLI
+
 ### Requirements
 
 - Your license key