Make client_uri mandatory

proposals/2966-oauth2-dynamic-registration.md

@@ -30,7 +30,7 @@ Some of those metadatas are optional in the RFC but required in this context.
 | Name             | Description                                                                                                 | Behaviour                                        | Localizable |
 | ---------------- | ----------------------------------------------------------------------------------------------------------- | ------------------------------------------------ | ----------- |
 | `client_name`    | Human-readable name of the client to be presented to the user                                               | Required                                         | Yes         |
-| `client_uri`     | URL of a web page providing information about the client                                                    | Optional                                         | Yes         |
+| `client_uri`     | URL of a web page providing information about the client                                                    | Required                                         | Yes         |
 | `logo_uri`       | URL that references a logo for the client                                                                   | Optional                                         | Yes         |
 | `contacts`       | Array of strings representing ways to contact people responsible for this client, typically email addresses | Required, non-empty                                         | No          |
 | `tos_uri`        | URL that points to a human-readable terms of service document for the client                                | Required                                         | Yes         |