docs: add nonce example to account query in README

[antazoey]

What I did

I was unsure how to do this, went to look it up, couldnt figure it out, so adding this for next time.

How I did it

How to verify it

Checklist

• [ ] Passes all linting checks (pre-commit and CI jobs)
• [ ] New test cases have been added and are passing
• [ ] Documentation has been updated
• [ ] PR title follows Conventional Commit standard (will be automatically included in the changelog)

[antazoey]

Helps this issue indirectly: https://github.com/ApeWorX/ape/issues/965