fix: server-functions folder and asset paths

[caopengau]

Description

Match the folder name of the opennext built

Context

Reduce setup friction

Type of changes

• [x] Refactoring (non-breaking change)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would change existing functionality)
• [x] Bug fix (non-breaking change which fixes an issue)

Checklist

• [x] I am familiar with the contributing guidelines
• [x] I have followed the code style of the project
• [x] I have added tests to cover my changes
• [x] I have updated the documentation accordingly
• [ ] This PR is a result of pair or mob programming

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• [ ] I confirm that neither PII/PID nor sensitive data are included in this PR and the codebase changes.