Fix typo: Change 'Requited' to 'Required' in MSI app submission documentation

[Copilot]

Fixed a typo in the MSI/EXE app submission documentation where "Requited" was incorrectly used instead of "Required" in the Packages page table for the App type field.

The typo was found in the table that describes required fields for MSI/EXE app submissions:

Before:

| **App type**               | **Requited** | Specify between EXE and MSI |

After:

| **App type**               | **Required** | Specify between EXE and MSI |

This change ensures consistency with the other "Required" entries in the same table and improves the documentation's clarity for developers submitting MSI/EXE apps to the Microsoft Store.

Fixes #5474.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[Copilot]

@GrantMeStrength 👋 This repository doesn't have Copilot instructions. With Copilot instructions, I can understand the repository better, work faster and produce higher quality PRs.

I can generate a .github/copilot-instructions.md file for you automatically. Click here to open a pre-filled issue and assign it to me. I'll write the instructions, and then tag you for review.

[learn-build-service-prod]

Learn Build status updates of commit 6a738cb:

⚠️ Validation status: warnings

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

[learn-build-service-prod]

Learn Build status updates of commit ec033f9:

✅ Validation status: passed

File	Status	Preview URL	Details
hub/apps/publish/publish-your-app/msi/create-app-submission.md	✅Succeeded

For more details, please refer to the build report.