Why won’t thecitation suffix appear in the PDF from the markdown below?

---
biblio-style: numeric
csl: mathematics-in-engineering.csl
geometry:
- margin=2cm
fontsize: 12pt
references:
- type: document
  id: DevGuide
  author: 'Computer Simulation Ltd.'
  issued: 
    date-parts: 
    - - 2021
  title: 'Development Guide'
  language: en-GB
---

Hello world @DevGuide [p. 33]

\newpage

# References

I’m compiling with the following:

pandoc -s --no-check-certificate --citeproc -H deeplists.tex --from  markdown --to latex test.md -o test.tex
latexmk -pdflatex test.tex

Where deeplists.tex is similar to what is shown in this issue and should have no impact on what I’m doing here.