Make client credentials discovery requirement conditional

Author: jeswr

index.bs

@@ -470,10 +470,10 @@ credentials.
 
 ## Solid-OIDC Conformance Discovery ## {#client-credentials-discovery}
 
-For non-interactive use cases such as scripts, automated agents, and server-to-server communication, this specification
-also requires that an OpenID Provider that conforms to the Solid-OIDC specification MUST advertise its support for the
-[Client Credentials Grant](https://www.rfc-editor.org/rfc/rfc6749#section-4.4) in the OpenID Connect Discovery 1.0
-[OIDC.Discovery] resource by including `client_credentials` in its `grant_types_supported` metadata property.
+For non-interactive use cases such as scripts, automated agents, and server-to-server communication, an OpenID Provider
+that supports the [Client Credentials Grant](https://www.rfc-editor.org/rfc/rfc6749#section-4.4) MUST advertise that
+support in the OpenID Connect Discovery 1.0 [OIDC.Discovery] resource by including `client_credentials` in its
+`grant_types_supported` metadata property.
 
 <div class="example">
     <pre highlight="json">