docs: point to new qiskit inventory

[airwoodix]

In #135, the link to the intersphinx inventory for Qiskit was updated from https://qiskit.org/documentation/ to https://docs.quantum.ibm.com/api/qiskit/. However, the latter points to Qiskit 1.0.0 documentation, which breaks the build (see e.g. this job).

Therefore, #136 points again to qiskit.org, which still serves the inventory for Qiskit 0.45.

@Eric-Arellano is the inventory for Qiskit <1 served by docs.quantum.ibm.com? I tried https://docs.quantum.ibm.com/api/qiskit/0.46/objects.inv but it doesn't point anywhere.

In the mid term, porting to Qiskit 1.0.0 will solve this issue.

[Eric-Arellano]

Thanks for opening this! I opened Qiskit/documentation#829 and will try to get this out today.

[airwoodix]

Sounds great, thanks @Eric-Arellano. Do you have a timeline for landing the corresponding patch?

Our plan is to support Qiskit 1.0 soonish, but it'd be great to be able to point to older versions (also on the 1.x branch).

[Eric-Arellano]

https://docs.quantum.ibm.com/api/qiskit/0.46/objects.inv is now live. Thanks for the feature request! That's really helpful for us to prioritize.

[airwoodix]

Fantastic! Thanks a lot @Eric-Arellano.