Update disable-access-to-services-with-microsoft-365-powershell.md

[msbemba]

trafficstars

Made changes to the PS script

Fixes https://github.com/MicrosoftDocs/microsoft-365-docs-pr/issues/23705

[msbemba]

@JohanFreelancer9 Please copy review

[learn-build-service-prod[bot]]

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[yogkumgit]

@kelleyvice-msft Please merge this PR. Thanks