Fix file tree

[VincentTam]

Description

1. Regenerate the file tree of exampleSite using Linux's tree command.
2. Delete exampleSite/data/comments folder due to Add GitLab support eduardoboucas/staticman#219 (comment).

Motivation and Context

To fix #62.

Screenshots (if appropriate):

NIL

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 code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation, including theme.toml, accordingly.