Defining attribtues with reflect in the currency guide is confusing

[almostSouji]

Is your feature request related to a problem? Please describe.

https://discordjs.guide/sequelize/currency.html#helper-methodsa defines custom methods on the collection class, we should avoid that

Describe the solution you'd like

standalone util functions that take in the required parameters and do the logic

Describe alternatives you've considered

n/a

Additional notes

No response