Update index.md

[RohitSharma27]

The "get App Installer from the Microsoft Store" link is returning 503 and it does not point to the store web app. Updated the link to point to the App Installer app on store.

[prmerger-automator]

@RohitSharma27 : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit 4e48afc:

✅ Validation status: passed

File	Status	Preview URL	Details
hub/package-manager/winget/index.md	✅Succeeded

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[prmerger-automator]

PRMerger Results

Issue	Description
Index File	This PR contains a change to the index file.

[mdanish-kh]

cc @denelon

[denelon]

@RohitSharma27 I've got another update coming with some additional information. We're going to remove this link as we're going to offer another way using "Repair-WinGetPackageManager" as the method for updating / repairing WinGet. Thanks for the PR though!

[denelon]

We're going to update the documentation via some other changes I've just started working on related to:

• winget client is not discoverable in the Microsoft Store microsoft/winget-cli#4927

[learn-build-service-prod]

Learn Build status updates of commit a9d3b13:

✅ Validation status: passed

File	Status	Preview URL	Details
hub/package-manager/winget/index.md	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[prmerger-automator]

PRMerger Results

Issue	Description
Index File	This PR contains a change to the index file.