Fix reported broken links in Sphinx linkcheck that are actually working by ignoring them

These links are actually working redirects, but don't allow checking that in an automated way

Checked them and ignoring via linkcheck_ignore so Docs: link check stage doesn't fail anymore

"https://doi.org/10.1063/1.447644",
"https://doi.org/10.1063/1.5089550",
"https://doi.org/10.1109/TQE.2020.2965810",
"https://www.sciencedirect.com/science/article/pii/S0370157313000562",

Before: https://gitlab.com/quantify-os/quantify-scheduler/-/pipelines/876136493

After: https://gitlab.com/quantify-os/quantify-scheduler/-/pipelines/876222775

After merging, we could set Docs: link check to fail pipeline upon failure