fix: Fix the JSDoc comments on the TZDate and TZDateMini classes

[csandman]

I just noticed that the doc comment on the TZDate class (in the .js file) is still the UTCDate, which I assume it was forked from. However, I also noticed that the correct comment was on the declaration file for the class, so I just replaced the one on the JS class with the other one.

I also noticed that there was no doc comment on the TZDateMini class, so I copied that one as well.

Alternatively, maybe you actually don't want to include them at all on the JS file versions? I'm not really sure how they interact if someone is using a non-typescript project. So if you'd rather have me remove both of them, I can update it to that instead. I just figured a correct doc comment was better than an incorrect one haha.

[kossnocorp]

Hey, thank you! I think you're right about not needing to include them. It's better to get rid of them so when I update docs, I don't forget to update the copy. The same problem is in the UTC repo, too. If you want, you can send a PR there, too: https://github.com/date-fns/utc/blob/main/src/date/index.js#L3-L15. Or let me know, and I'll remove it there myself.

[csandman]

Hey, thank you! I think you're right about not needing to include them. It's better to get rid of them so when I update docs, I don't forget to update the copy. The same problem is in the UTC repo, too. If you want, you can send a PR there, too: date-fns/utc@main/src/date/index.js#L3-L15. Or let me know, and I'll remove it there myself.

Gotcha, I just removed them!