backend-plugin-api: switch createBackendPlugin id -> pluginId

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/user-settings-backend/src/plugin.ts

@@ -26,7 +26,7 @@ import { createRouter } from './service/router';
  * @alpha
  */
 export const userSettingsPlugin = createBackendPlugin({
-  id: 'userSettings',
+  pluginId: 'userSettings',
   register(env) {
     env.registerInit({
       deps: {