chore: Use subfolder for NPM package homepage

[nschonni]

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Description

Changes the NPM package homepage to the folder where the package contents are located

Motivation and Context

When trying to trace back something in the NPM package so I could look at the source it was initially not super clear where to find the source for this package in the larger repo

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[CLAassistant]

All committers have signed the CLA.

[nschonni]

@diemol this is another small quality of life fix, but I'm fine if it's closed

[harsha509]

Thank you @nschonni !

[diemol]

Thank you, @nschonni!

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

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