Update data/api/client-server/profile.yaml

Co-authored-by: Johannes Marbach <n0-0ne+github@mailbox.org>

data/api/client-server/profile.yaml

@@ -31,9 +31,9 @@ paths:
         field, including its key and value, SHOULD use the `DELETE` endpoint instead.
 
         This endpoint uses [capabilities negotiation](/client-server-api/#capabilities-negotiation)
-        depending on the `keyName`.
+        depending on the `keyName`. Clients SHOULD check the value of the
-        For the `displayname` key, clients SHOULD check the value of the [`m.set_displayname` capability](/client-server-api/#mset_displayname-capability).
+        [`m.profile_fields` capability](/client-server-api/#mprofile_fields-capability) to detect
-        For the `avatar_url` key, clients SHOULD check the value of the [`m.set_avatar_url` capability](/client-server-api/#mset_avatar_url-capability).
+        which `keyName`s they are allowed to modify.
       operationId: setProfileField
       security:
         - accessTokenQuery: []