docs(config): Document OCM discovery toggles

Signed-off-by: Micke Nordin <kano@sunet.se>

Author: mickenordin

config/config.sample.php

@@ -2276,6 +2276,24 @@
 	 */
 	'sharing.federation.allowSelfSignedCertificates' => false,
 
+	/**
+	 * Override the ``apiVersion`` advertised in the local OCM discovery document.
+	 * Setting this to a non-empty string also removes the non-standard ``version``
+	 * field. Leave empty for compatibility with older Nextcloud servers.
+	 *
+	 * Defaults to ``''`` (empty string)
+	 */
+	'sharing.federation.ocm.apiVersion' => '',
+
+	/**
+	 * Remove the non-standard ``publicKey`` field from the local OCM discovery
+	 * document. Enable this only when all federated peers support RFC 9421 HTTP
+	 * signatures, for example when all peers run Nextcloud 35 or higher.
+	 *
+	 * Defaults to ``false``
+	 */
+	'sharing.federation.ocm.removePublicKey' => false,
+
 	/**
 	 * Hashing
 	 */