[TEST: Suggested formatting improvements]: for README.md for better readability

[ChetanSharma-msft]

This PR suggests formatting improvements for the file.

[acrolinxatmsft1]

Acrolinx Scorecards

We currently enforce a minimum score of 80.

Click the scorecard links for each article to review the Acrolinx feedback on grammar, spelling, punctuation, writing style, and terminology:

Article	Score	Issues	Scorecard	Processed
msteams-platform/tabs/what-are-tabs.md	88	3	link	✅

More info about Acrolinx

Use the Acrolinx extension, or sidebar, in Visual Studio Code to check spelling, grammar, style, tone, clarity, and key terminology when you're creating or updating content. For more information, see Use the Visual Studio Code extension to run Acrolinx locally.

[learn-build-service-prod]

Learn Build status updates of commit 1c741ea:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
msteams-platform/tabs/what-are-tabs.md	⚠️Warning	View	Details

msteams-platform/tabs/what-are-tabs.md

• Line 1, Column 1: [Warning: title-missing - See documentation] Missing required attribute: 'title'. Add a title string to show in search engine results.
• Line 1, Column 1: [Warning: ms-topic-missing - See documentation] Missing required attribute: 'ms.topic'.
• Line 1, Column 1: [Suggestion: ms-date-missing - See documentation] Missing required attribute: 'ms.date'.
• Line 1, Column 1: [Suggestion: description-missing - See documentation] Missing required attribute: 'description'.

For more details, please refer to the build report.

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