Tutorial for expect

[aj-stein-nist]

Committer Notes

Closes #527.

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• [x] Have you followed the guidelines in our Contributing document?
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Changes to Core Features:

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• ~Have you written new tests for your core changes, as applicable?~ N/A website change

[aj-stein-nist]

Website builds are going to fail until tutorial 2 in #508 is merged (it's been reviewed informally during successive community calls and Dave's feedback has been addressed, but I have triage perms and cannot merge it into develop).

/cc @david-waltermire

[aj-stein-nist]

This is very good. I requested some minor changes to improve the text.

I hope the upcoming matches tutorial matches expectations.

(I'll see myself out. 🚪 🚶)