Simplify some comments

The reference to "config fragment" may be unclear here, so just leave it
out. Someone interested in the details of how configuration is passed to
applications on launch can read the code that uses this config type.

src/annotator/components/NotebookModal.js

@@ -9,7 +9,7 @@ import { createAppConfig } from '../config/app';
  * Configuration used to launch the notebook application.
  *
  * This includes the URL for the iframe and configuration to pass to the
- * application using a config fragment (see {@link addConfigFragment}).
+ * application on launch.
  *
  * @typedef {{ notebookAppUrl: string } & Record<string, unknown>} NotebookConfig
  */

src/annotator/sidebar.js

@@ -32,7 +32,7 @@ export const MIN_RESIZE = 280;
  * Client configuration used to launch the sidebar application.
  *
  * This includes the URL for the iframe and configuration to pass to the
- * application using a config fragment (see {@link addConfigFragment}).
+ * application on launch.
  *
  * @typedef {{ sidebarAppUrl: string } & Record<string, unknown>} SidebarConfig
  */