Small typo in submission instructions

[jdaymude]

During the registration of machines to a submission, the package prints output like:

Exporting submissions to `submissions.json`.
    Exporting DFA for Question 1
    ...
If you intent to submit to Gradescope, please upload the JSON file without renaming.

Here in the last sentence, "intent" should be "intend", and a student suggested adding "it" to the end of the sentence to be more precise.