docs: add note about getCurrent to get urls that opened the app

Author: FabianLars

src/content/docs/plugin/deep-linking.mdx

@@ -217,12 +217,18 @@ The deep-link plugin is available in both JavaScript and Rust.
 <Tabs syncKey="lang">
   <TabItem label="JavaScript">
 
-When a deep link triggers your app to be opened, the `onOpenUrl` callback is executed:
+When a deep link triggers your app while it's running, the `onOpenUrl` callback is called. To detect whether your app was opened via a deep link, use `getCurrent` on app start.
 
 ```javascript
-import { onOpenUrl } from '@tauri-apps/plugin-deep-link';
+import { getCurrent, onOpenUrl } from '@tauri-apps/plugin-deep-link';
 // when using `"withGlobalTauri": true`, you may use
-// const { onOpenUrl } = window.__TAURI__.deepLink;
+// const { getCurrent, onOpenUrl } = window.__TAURI__.deepLink;
+
+const startUrls = await getCurrent();
+if (startUrls) {
+  // App was likely started via a deep link
+  // Note that getCurrent's return value will also get updated every time onOpenUrl gets triggered.
+}
 
 await onOpenUrl((urls) => {
   console.log('deep link:', urls);
@@ -232,7 +238,7 @@ await onOpenUrl((urls) => {
   </TabItem>
   <TabItem label="Rust">
 
-When a deep link triggers your app to be opened, the `on_open_url` closure is called:
+When a deep link triggers your app while it's running, the plugin's `on_open_url` closure is called. To detect whether your app was opened via a deep link, use `get_current` on app start.
 
 ```rust title="src-tauri/src/lib.rs"
 use tauri_plugin_deep_link::DeepLinkExt;
@@ -242,6 +248,13 @@ pub fn run() {
     tauri::Builder::default()
         .plugin(tauri_plugin_deep_link::init())
         .setup(|app| {
+            // Note that get_current's return value will also get updated every time on_open_url gets triggered.
+            let start_urls = app.deep_link().get_current()?;
+            if let Some(urls) = start_urls {
+                // app was likely started by a deep link
+                println!("deep link URLs: {:?}", urls);
+            }
+
             app.deep_link().on_open_url(|event| {
                 println!("deep link URLs: {:?}", event.urls());
             });