Fix typos in Money Transfer Project for golang

[fairlydurable]

Typo fixes.

One of the fixes is the name of a test. I ran the tests both with and without the name change, and confirmed the results were the same. I also searched to see if any other material in the project referenced the incorrectly named test and there were no references.

[CLAassistant]

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[tomwheeler]

I agree with these changes