[documentation] Show what the start conditions look like when plotted
I tested the example with running start condition but I couldn't find an example in our docs of the rendered graph to compare with.
We need to add graph examples for that section. Here's what I got locally:
![image](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)