Update example

Author: Stefan Kuethe

docs/concepts/controls.md

@@ -8,13 +8,19 @@ Controls are user interface elements that you can add to your map:
 
 > See [Controls API](../../api/controls/)
 
+```python {marimo}
+import micropip
+await micropip.install("openlayers")
+```
+
 ```python {marimo display_code=True}
 import openlayers as ol
-from openlayers.basemaps import CartoBasemapLayer
 
 m = ol.MapWidget(
-    layers=[CartoBasemapLayer()],
-    controls=[ol.OverviewMapControl(collapsed=False)]
+    controls=[
+        ol.ZoomToExtentControl(),
+        ol.ScaleLineControl()
+    ]
 )
 m
 ```