Fix paper references not being highlighted

[paddyroddy]

Which Section of the Documentation Needs Improving?

This happening due to this bug, sphinx-doc/sphinx#9689. Hopefully, this is fixed in future. Broken in #347.

What Can be Improved About This Section

Fix references

How to Improve This Section

No response

[Saransh-cpp]

This is technically blocked, right?

[paddyroddy]

This is technically blocked, right?

Yeah, assuming we stick with how we are currently doing it