Bonito plotting example does not include any plots

[yakir12]

This might be intended, but since the other two examples (CairoMakie and WGLMakie) do produce plots, I assumed that the Bonito one would do too.

[ndortega]

That's a good point. I left out the graph embedding to showcase rendering a Bonito.App object and kept the examples brief - but this is probably more confusing since most people would expect to see a graph.

I'll go back and embed a similar heatmap example into bonito app to make this use case clearer