UPDATE - \Add instructions for translation

[mekline]

@becky-gilbert provided more granular instructions for prepping translation materials in this thread - should populate them back to the docs!

https://lookit-mit.slack.com/archives/CHG0M1LA1/p1719681386201519

[mekline]

(to migrate)

[becky-gilbert]

@bleonar5 wrote a draft here: #483 I think we should (1) figure out where in the docs this should go, and (2) move Brian's content into a PR for approval/editing.