Some broken links in the docs

[VisLab]

https://nwb-schema.readthedocs.io/en/latest/format_release_notes.html?highlight=Trial#improved-support-for-trial-based-data has some broken links... such as in:

See the PyNWB docs for a short tutorial on how to use trials.

Thx

[oruebel]

Thanks for the issue note. For the PyNWB tutorial for trials you can see here:

https://pynwb.readthedocs.io/en/stable/tutorials/general/plot_timeintervals.html#sphx-glr-tutorials-general-plot-timeintervals-py

[rly]

Closed by #562