Fix Microsoft Store's App Installer URL (#4925)

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- [x] This pull request is related to an issue.
    - Closes #4924

The previous URL seems to be returning 503.

cc @denelon

-----

###### Microsoft Reviewers: [Open in
CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/microsoft/winget-cli/pull/4925)

README.md

@@ -16,7 +16,7 @@ If you are new to the Windows Package Manager, you might want to [Explore the Wi
 
 ### Microsoft Store [Recommended]
 
-The client is distributed within the [App Installer](https://www.microsoft.com/p/app-installer/9nblggh4nns1) package.
+The client is distributed within the [App Installer](https://apps.microsoft.com/detail/9nblggh4nns1) package.
 
 ### Development Releases
 

doc/troubleshooting/README.md

@@ -10,7 +10,7 @@ The first thing to check is which version of Windows 10 you have.
 
 The Windows Package Manager requires at least Version 1809 (October 2018 Update).
 
-The next requirement is ensuring you have the [App Installer](https://www.microsoft.com/p/app-installer/9nblggh4nns1) from the Microsoft Store. The Windows Package Manager is delivered as an MSIX package. The App Installer is required to install MSIX packages on Windows 10.
+The next requirement is ensuring you have the [App Installer](https://apps.microsoft.com/detail/9nblggh4nns1) from the Microsoft Store. The Windows Package Manager is delivered as an MSIX package. The App Installer is required to install MSIX packages on Windows 10.
 
 >Note: The Windows Package Manager is shipped with later versions of the App Installer.
 

doc/windows-package-manager-release-roadmap.md

@@ -24,7 +24,7 @@ The Windows Package Manager project is engineered and delivered as described bel
 
 #### Release
 
-* Available from to Windows Insiders through the [Microsoft Store](https://www.microsoft.com/p/app-installer/9nblggh4nns1) & [GitHub Releases](https://github.com/microsoft/winget-cli/releases)
+* Available from to Windows Insiders through the [Microsoft Store](https://apps.microsoft.com/detail/9nblggh4nns1) & [GitHub Releases](https://github.com/microsoft/winget-cli/releases)
 * Release Notes & Announcement Blog published
 * Engineering System Maintenance
 * Community Engagement

doc/windows/package-manager/winget/index.md

@@ -14,7 +14,7 @@ The **winget** command line tool enables users to discover, install, upgrade, re
 
 There are several ways to install the **winget** tool:
 
-* The **winget** tool is included in the flight or preview version of [Windows App Installer](https://www.microsoft.com/p/app-installer/9nblggh4nns1?ocid=9nblggh4nns1_ORSEARCH_Bing&rtc=1&activetab=pivot:overviewtab). You must install the preview version of **App Installer** to use **winget**. To gain early access, submit your request to the [Windows Package Manager Insiders Program](https://aka.ms/AppInstaller_InsiderProgram). Participating in the flight ring will guarantee you see the latest preview updates.
+* The **winget** tool is included in the flight or preview version of [Windows App Installer](https://apps.microsoft.com/detail/9nblggh4nns1?ocid=9nblggh4nns1_ORSEARCH_Bing&rtc=1&activetab=pivot:overviewtab). You must install the preview version of **App Installer** to use **winget**. To gain early access, submit your request to the [Windows Package Manager Insiders Program](https://aka.ms/AppInstaller_InsiderProgram). Participating in the flight ring will guarantee you see the latest preview updates.
 
 * Participate in the [Windows Insider Dev Channel](https://insider.windows.com/understand-flighting).