[Wiki] Update Getting started - Scenario 1 Consume library.md

[paggarwalmsft]

Description

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Command for key vault module deployment(sample guideline) was not correct hence updated the same

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Type of Change

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• Update to documentation

Checklist

• My corresponding pipelines / checks run clean and green without any errors or warnings
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (readme)
• I did format my code

[eriqua]

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