Changed definition of public key id to follow Nextcloud (#200)

Author: glpatcern

IETF-RFC.md

@@ -301,7 +301,7 @@ itself be an object containing the following fields:
 * OPTIONAL: publicKey (object) - The signatory used to sign outgoing request to confirm its origin. The 
           signatory is optional, but if present, it MUST contain two string fields, `id` and `publicKeyPem`.
         properties:
-  * REQUIRED id (string) unique id of the key in URI format. The hostname set the origin of the 
+  * REQUIRED keyId (string) unique id of the key in URI format. The hostname set the origin of the 
               request and MUST be identical to the current discovery endpoint.
             Example: https://my-cloud-storage.org/ocm#signature
   * REQUIRED publicKeyPem (string) - PEM-encoded version of the public key.

spec.yaml

@@ -454,7 +454,7 @@ components:
             The 
             signatory is optional but it MUST contain `id` and `publicKeyPem`.
           properties:
-            id:
+            keyId:
               type: string
               description: >
                 unique id of the key in URI format. The hostname set the origin