Add maplibre RTL text plugin to the demonstration
diff --git a/public/demo.html b/public/demo.html
index b5f2334..a424044 100644
--- a/public/demo.html
+++ b/public/demo.html
@@ -55,6 +55,15 @@
 <script src="https://buttons.github.io/buttons.js" crossorigin="anonymous"></script>
 <script>
 
+  // Load the right-to-left plugin if necessary.
+  if (maplibregl.getRTLTextPluginStatus() === 'unavailable') {
+    maplibregl.setRTLTextPlugin(
+            'https://unpkg.com/@mapbox/mapbox-gl-rtl-text@0.2.3/mapbox-gl-rtl-text.min.js',
+            null,
+            true
+    );
+  }
+
   // Initialize the map
   var map = new mapboxgl.Map({
     container: 'map',