Fix namings so the combiner works again

[Wout-M]

I changed the fetching of the folders and their names from DIM to the naming it currently uses.
I also spaced out the code a bit for easier readability.
I haven't used Java in years (I code in C#) so feel free to comment on the changes.

[Wout-M]

@GreenCauldron08 Hi,

Have you been able to look at this PR?

[GreenCauldron08]

My apologies, I didn't notice your pull request until just now. I'll have a look.

[Wout-M]

Hi @GreenCauldron08 , any progress?

[GreenCauldron08]

I finally looked into it. I didn't even realize minecraft had changed their dimension naming scheme, and I was confused for a long time cuz I thought you were looking for dimension names that started with "waypoint". Once I figured out that we both had the same idea about how to find the dimension folder's names, it made wayyy more sense. Your idea seems fine.
However, could you possibly submit a version where the formatting hasn't been changed throughout most of the document? That way, people can see where functionality has actually changed instead of the whole document seeming rewritten, and I can more comfortably make changes in the future as well.

[Wout-M]

@GreenCauldron08 Done

[Wout-M]

@GreenCauldron08 Any progress on this?