chore: update dataset_loader.cpp

[eltociear]

intial -> initial

[jameslamb]

thanks very much for taking the time to contribute!

I found a few more cases of this particular typo:

git grep -i intial

Could you please fix those too?

[borchero]

@jameslamb we could think about adding typos as a pre-commit hook. It minimizes false positives by using a list of well-known typos rather than defining a dictionary of valid words 😄

[jameslamb]

@borchero oh very cool, I hadn't seen that before! Let's try it, it looks great. Could you put up a separate PR?

I'll merge this one as-is without waiting to fix the other couple uses of intial, so @eltociear can get their first contribution here and so we don't have to wait on this to add that pre-commit check.

[jameslamb]

thanks for taking the time to contribute, come back any time!