Consider using diffForHumans instead of diffInRealMinutes in the welcome message

[moisesh18]

Hello,

I’ve noticed a small issue regarding the use of diffInRealMinutes in the welcome message. Currently, the code uses:
->line(Lang::get('This welcome link will expire in :count minutes.', ['count' => $this->validUntil->diffInRealMinutes()]));

The diffInRealMinutes function does not handle formatting user-friendly time differences (e.g., “in 5 minutes”, “in 2 hours”) and might return unexpected negative or non-rounded values.

To improve the user experience, I recommend replacing diffInRealMinutes with diffForHumans, which provides a more readable and accurate representation of the remaining time. For example:
->line(Lang::get('This welcome link will expire :time.', ['time' => $this->validUntil->diffForHumans()]));

[moisesh18]

#57