Fix typo in cmdlet example

[mauricio-msft]

Description

Example 1 has a wrong cmdlet in line 2, the cmdlet specified doesn't exist because of a typo, happening in all versions.

Checklist

• [x ] I have read the Submitting Changes section of CONTRIBUTING.md
• [ x] The title of the PR is clear and informative
• [ x] The appropriate ChangeLog.md file(s) has been updated:
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header -- no new version header should be added
• [ x] The PR does not introduce breaking changes
• [ x] If applicable, the changes made in the PR have proper test coverage
• [ x] For public API changes to cmdlets:
  • [ x] a cmdlet design review was approved for the changes in this repository (Microsoft internal only)
    • {Please put the link here}
  • [x ] the markdown help files have been regenerated using the commands listed here

[ghost]

Thank you for your contribution mauricio-msft! We will review the pull request and get back to you soon.