[StorageMover] Fix online help link to match cmdlet name

[VeryEarly]

Description

Mandatory Checklist

• Please choose the target release of Azure PowerShell. (⚠️Target release is a different concept from API readiness. Please click below links for details.)

  • General release
  • Public preview
  • Private preview
  • Engineering build
  • No need for a release

• Check this box to confirm: I have read the Submitting Changes section of CONTRIBUTING.md and reviewed the following information:

• SHOULD update ChangeLog.md file(s) appropriately
  • Update src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md.
    • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header in the past tense.
  • Should not change ChangeLog.md if no new release is required, such as fixing test case only.
• SHOULD regenerate markdown help files if there is cmdlet API change. Instruction
• SHOULD have proper test coverage for changes in pull request.
• SHOULD NOT adjust version of module manually in pull request

[azure-client-tools-bot-prd]

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[Copilot]

Pull Request Overview

This PR fixes a documentation URL mismatch in the StorageMover module by correcting the online help link to match the actual cmdlet name. The change ensures that the help documentation URL properly reflects the Update-AzStorageMoverAzNfsFileShareEndpoint cmdlet name rather than the incorrect update-azstoragemovernfsfileshareendpoint.

• Corrected the online help URL to include the missing "az" prefix in the cmdlet name

[isra-fel]

LGTM