Add microsoft_teams to notifications API

[pjaudiomv]

Description

Add microsoft_teams to notifications API docs

Issues Resolved

Closes #[Replace this text, including the brackets, with the issue number. Leave "Closes #" so the issue is closed properly.]

Version

2.10.0 and later
2.10.0

Frontend features

If you're submitting documentation for an OpenSearch Dashboards feature, add a video that shows how a user will interact with the UI step by step. A voiceover is optional.

Checklist

• By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and subject to the Developers Certificate of Origin.
  For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

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[kolchfa-aws]

@pjaudiomv Thanks for submitting the PR! What version of OpenSearch is this for? Could you fix DCO so we can proceed with reviews?

[kolchfa-aws]

@amsiglan Could you review this PR?

[pjaudiomv]

@pjaudiomv Thanks for submitting the PR! What version of OpenSearch is this for? Could you fix DCO so we can proceed with reviews?

2.10.0 or later and just added signoff