/constitution command not updated in the spec-driven.md document

[infinitelyloopy-bt]

The /constitution is mentioned and update in the README.md file but not in the spec-driven.md.

Updating the spec-driven.md would be fantastic as it not only has a lot of details but additional commentry for us to be able to use the toolkit better.

[dkmin]

+1
ref. /templates/commands/constitution.md