(docs) Updates diagram references

docs/examples/complete.md

@@ -247,4 +247,15 @@ In this small code block above, we have setup a fairly sophisticated embodied ag
 - A single input interface that routes the input to different models based on its content.
 
 We can visualize the complete graph in the following diagram:
-![CompleteGraph](../_static/complete_light.png)
+```{figure} ../_static/complete_dark.png
+:class: only-dark
+:alt: Complete embodied agent
+:align: center
+Complete embodied agent graph
+```
+```{figure} ../_static/complete_light.png
+:class: only-light
+:alt: Complete embodied agent
+:align: center
+Complete embodied agent graph
+```