edited doc/src/build/move/build-test.md for currency, updatedness

[jymchng]

Updated doc/src/build/move/build-test.md for currency, updatedness.

[randall-Mysten]

Hi @jymchng thanks for the additional contributions. Looks like some updates to this were already in progress https://github.com/MystenLabs/sui/pull/5544 Can you please merge those and see what deltas remain? Thanks

[jymchng]

Already resolved conflicts for the docs.

[phuson]

After going through this section (https://docs.sui.io/build/move/build-test#sui-specific-testing) of the tutorial, I can confirm that this change is necessary because the current documentation is confusing and the test transaction descriptions do not line up properly. Furthermore, at this point in the tutorial, the mutable reference to Forge should be removed from the signature of the sword_create function.