[Documentation]: Make all tutorials show dynamic outputs

[rly]

What would you like changed or added to the documentation and why?

This allows us to see the expandable NWBFile object as well as DataFrames.

We need to rename the files plot_x.py and remove the hard-coded outputs.

Do you have any interest in helping write or edit the documentation?

Yes.

Code of Conduct

• [X] I agree to follow this project's Code of Conduct
• [X] Have you checked the Contributing document?
• [X] Have you ensured this change was not already requested?

[oruebel]

We need to rename the files plot_x.py

Can you clarify why this requires renaming the tutorials? Just wondering, because it would be nice to avoid breaking links if possible.