chore: update documentation

plugins/shell/guest-js/init.ts

@@ -2,6 +2,17 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-License-Identifier: MIT
 
+/**
+ * Webview script injected by the shell plugin on every page load.
+ *
+ * It installs a `click` listener on `document.body` that intercepts clicks on
+ * `<a target="_blank">` elements whose `href` starts with `http://`, `https://`,
+ * `mailto:` or `tel:`, cancels the navigation and opens the link with the
+ * system's default application through the `plugin:shell|open` command instead.
+ *
+ * @module
+ */
+
 import { invoke } from '@tauri-apps/api/core'
 
 // open <a href="..."> links with the API