refactor: Add example images path to radar chart documentation

Author: ndonkoHenri

sdk/python/packages/flet/docs/charts/radar_chart.md

@@ -1,6 +1,7 @@
 ---
 class_name: flet_charts.radar_chart.RadarChart
 examples: ../../examples/controls/charts/radar_chart
+example_images: ../examples/controls/charts/radar_chart/media
 ---
 
 {{ class_summary(class_name) }}
@@ -13,4 +14,6 @@ examples: ../../examples/controls/charts/radar_chart
 --8<-- "{{ examples }}/example_1.py"
 ```
 
+{{ image(example_images + "/example_1.png", width="80%") }}
+
 {{ class_members(class_name) }}