docs: don't stop the worker script even if a connection with a client is aborted

docs/worker.md

@@ -35,6 +35,9 @@ The following example shows how to create your own worker script without relying
 <?php
 // public/index.php
 
+// Prevent worker script termination when a client connection is interrupted
+ignore_user_abort(true);
+
 // Boot your app
 require __DIR__.'/vendor/autoload.php';