docs: confusing error message about storage adapter with no hints to resolution

[coolaj86]

node_modules/@dashevo/wallet-lib/src/types/Storage/_getDefaultAdapter.js:

11:    logger.warn('Running on a NodeJS env without any specified adapter. Data will not persist.');

1. This message doesn't mention what this is or where it comes from or how it is to be configured or even that it's a storage adapter that's in question.
2. There's no link to documentation or description of the name of the argument that was supposed to be passed, so it's quite difficult to figure out what to do.
3. I don't think there is any documentation whatsoever for this, at least there wasn't when I had to go figure it out a few months ago.

Re: dashpay/platform-tutorials#4 and dashpay/platform-tutorials#7