Expand description and add example

[get-itips]

closes https://github.com/MicrosoftDocs/office-docs-powershell/issues/8370

[opbld32]

Docs Build status updates of commit 0272410:

✅ Validation status: passed

File	Status	Preview URL	Details
skype/skype-ps/skype/New-CsTeamsEmergencyNumber.md	✅Succeeded	View (skype-ps)

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[yogkumgit]

@dariomws and @tseward

[yogkumgit]

@tiburd Please merge this PR. Thanks

[opbld33]

Docs Build status updates of commit e0ce525:

✅ Validation status: passed

File	Status	Preview URL	Details
skype/skype-ps/skype/New-CsTeamsEmergencyNumber.md	✅Succeeded	View (skype-ps)

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the docs.microsoft.com contributor guides
• Post your question in the Docs support channel