Fix broken RTD documentation builds

[ModeSevenIndustrialSolutions]

Patch raised here, need somebody to merge: #101

Here is the broken job, managed under the Linux Foundation readthedocs account:

[tedwaine]

Hello @ModeSevenIndustrialSolutions

Thank you for this, sorry for the complete lack of action on our side. We are finally catching up with issues and PRs on xSTUDIO after a long stretch of development and will be more responsive here on github.

Appreciate that you've long moved on to other things but if you have some time, are you able to rebase your branch to the current main and let me know if your fix still works? Also, TBH I don't know how xstudio is registered / integrated into readthedocs.org website, could you shed some light on that for me?! How are the builds triggered and how do we view the output? Has someone at Linux Foundation done the admin on that for us at some point, or is there some automation going on.

Many thanks,

Ted