fix(examples/api): broken link to source code (#1312)

Source link was pointing to the wrong folder on the repo

tauri/examples/api/src/App.svelte

@@ -83,8 +83,8 @@
     </a>
     &nbsp;&nbsp;&nbsp;
     <a class="dark-link" target="_blank"
-      href="https://github.com/tauri-apps/tauri/tree/dev/tauri/examples/communication">
+      href="https://github.com/tauri-apps/tauri/tree/dev/tauri/examples/api">
       Source for this App
     </a>
   </div>
-</main>
+</main>