Fixed Typos in steward_guidelines.md

[ChinmayKadam172]

Changes:
Earlier 'criteria' was spelled incorrectly as 'criterias' Also, 'unsubscribe' was spelled incorrectly as 'unsubcribe' Now it's been resolved

Screenshots of the change:

Earlier:

and

Now:

PR Checklist

• npm run lint passes
• Inline documentation is included / updated
• Unit tests are included / updated

[welcome]

🎉 Thanks for opening this pull request! Please check out our contributing guidelines if you haven't already. And be sure to add yourself to the list of contributors on the readme page!

[limzykenneth]

@ChinmayKadam172 Thanks for the PR. Just to note that this PR is still marked as draft so I assume you are still working on it. In case that's not intended, do mark the PR as ready for review and I can merge it after.

[ChinmayKadam172]

@ChinmayKadam172 Thanks for the PR. Just to note that this PR is still marked as draft so I assume you are still working on it. In case that's not intended, do mark the PR as ready for review and I can merge it after.

Thanks for the reply. I have checked for other typos in the documentation. LGTM. PR is ready for review.

[limzykenneth]

Looks good. Thanks!

@all-contributors please add @ChinmayKadam172 for docs

[allcontributors]

@limzykenneth

I've put up a pull request to add @ChinmayKadam172! 🎉