Shorten and use kebab-case for qiskit-ibm-runtime URLs

[arnaucasau]

This PR is a continuation of #2177 for all the versions of qiskit-ibm-runtime.

Once this PR is reviewed and accepted, I'll also set the redirects in closed source.

[frankharkins]

Thanks!

[Eric-Arellano]

Please don't merge until a) ibm-transpiler is 100% landed in prod, and b) you have the redirect code set up in closed source and we've reviewed it

[arnaucasau]

Thank you both for the review!

Please don't merge until...

Yes! That was my plan 👍

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In the last commit (0314cff), I changed the normalizeUrl function to update the links that point to the same API (mainly for the release-notes). In 78a4e5e, I updated them with another script I wrote, so this change is needed to avoid reverting the changes when regenerating the docs.

I think the change is safe, and I tested it by regenerating qiskit (latest, and one historical version), qiskit-addon-obp (currently using the new URLs), and runtime (latest, and one historical version). None of them showed any change in the docs.

Once all versions use the new URLs, we can change it to update links from /api in general. That way we will fix cross-reference between APIs.

[arnaucasau]

I updated the script to special case URLs with a version (e.g. v1 or v2) in 1cbca72. To help with the review of that change, I regenerated every version in a different commit again. That way, we can check that the change didn't affect any other link.

[Eric-Arellano]

Thanks! Bummer the diff treats some files as being deleted. The redirect code looks good too, so this can be merged when you're ready.