fix: fix spelling

[bmschmidt]

'alembert' is an autogenerated name, and it reads weirdly to not have it be d'alembert. So let's replace him with his partner in crime*.

*where 'crime' is against canon law.

---

[!IMPORTANT] Replace "alembert" with "diderot" in the nouns list in nomic/utils.py.

• Renaming:
  • Replace "alembert" with "diderot" in the nouns list in nomic/utils.py.

^{This description was created by for 97316572e028bab3fec15143b1366fbf050f28e9. It will automatically update as commits are pushed.}

[bmschmidt]

Gonna start replacing all my code review 'LGTM' with 'nihil obstat' or 'imprimatur'