Docs: Fix certificate store instructions - use Trusted Root Certification Authorities

[nek0der]

Description

Fixed the certificate installation instructions in README.md to use the correct certificate store.

Related Issue

This addresses incorrect certificate store instructions that would prevent users from successfully installing the MSIX package.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactoring (no functional changes)
• Build/CI changes

How Has This Been Tested?

Verified the correct certificate store through:

• Testing MSIX installation with both certificate stores
• Consulting official Microsoft documentation
• Reviewing community best practices

Test Configuration:

• Windows Version: 11 Build 26220
• Certificate Type: Self-signed (.cer)

Screenshots (if applicable)

N/A

Checklist

• My code follows the project's coding style
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly
• I have added entries to CHANGELOG.md (if applicable)
• My changes generate no new warnings
• I have tested my changes locally
• Any dependent changes have been merged and published

Breaking Changes

N/A

Additional Notes

Previous (Incorrect):

• Certificate Store: Trusted People

Current (Correct):

• Certificate Store: Trusted Root Certification Authorities

This change is critical for users to successfully install the MSIX package. The previous instructions would result in error 0x800B0109 ("The root certificate must be trusted").

References:

• Microsoft Learn: MSIX Core Deployment
• Advanced Installer: Installing Test Certificates

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