Description

❓What: Addition of link to paper in publications.md

🧠Why?: Niall's paper got published

👨‍💻How?: markdown minor change

Checklist:

Have checked for the following:

[ ] The website still builds correctly, and you can view it using mkdocs serve.
[ ] There are no new "warnings" from mkdocs
[X] Does your page follow the page template (or here in Markdown)? (need to make a new one specific to NHSE Data Science)
[X] Spelling errors
[X] Consistent capitalization
[X] Consistent numbers
[ ] Material features incorrectly implemented: search for code blocks and markers (e.g. !!!).
[ ] Code snippets don't work
[ ] Images not working
[ ] Links not working