Prevent undesired pages from being generated

[cjsha]

For example: https://open-ephys.github.io/bonsai-onix1-docs/api/OpenEphys.Onix1.DeviceNameConverter.html
This article is difficult to come by for the user because it's not in the toc and doesn't show up in search (after #260 is merged), but I think it's better if it's not generated at all.

[cjsha]

well, some of these pages are referenced by other pages, maybe not a good idea. Not sure