[MINOR][SS][DOCS] Fix a typo in the documentation of GroupState

[Dobiasd]

What changes were proposed in this pull request?

Fixing some typos in the documenting comments.

Why are the changes needed?

To make reading the docs more pleasant.

Does this PR introduce any user-facing change?

Yes, since the user sees the docs.

How was this patch tested?

It was not tested, because no code was changed.

[HyukjinKwon]

This is fine but @Dobiasd:

1. would you mind taking a look and see if there are more typos since we're here?
2. Also, please keep the GitHub pull request template.
3. Please take a look for https://github.com/apache/spark/pull/32400/checks?check_run_id=2467844791 and enable GItHub Actions for your repository so your PR can be properly tested.

[Dobiasd]

@HyukjinKwon Thanks for the help. 👍

• GitHub actions already was enabled for my forked repo: https://i.imgur.com/CTEkw1R.png
• I've rebased my branch on upstream master and force-pushed as described.
• My comment is updated now, using the template.
• Using Grammarly, I've fixed some more typos in the comments of GroupState.scala.

[HyukjinKwon]

ok to test

[HyukjinKwon]

Thanks @Dobiasd. It's weird that your forked repository doesn't run the tests at https://github.com/Dobiasd/spark/actions .. your branch looks sync'ed with the latest Apache Spark master branch too hm

[HyukjinKwon]

Hm, but the tests should pass though before merging it in. Do other repositories of yours run GitHub Actions workflows properly?

[HyukjinKwon]

Oh, I can see now: https://github.com/Dobiasd/spark/actions. Would you mind squahsing your comments and pushing it into this PR? e.g.) git rebase upstream/master -i, mark the second commit as s, and git push origin patch-1 --force

[Dobiasd]

Ah, when going directly to https://github.com/Dobiasd/spark/actions, it showed this: https://i.imgur.com/NA9PgLB.png

I've clicked on "I understand my workflows, go ahead and enable them". So it should be working now. 🙂

[Dobiasd]

The changes are squashed into one commit now. ✔️

[HyukjinKwon]

Merged to master.