Apache Helix Architecture page looks broken

[rahulrane50]

Describe the bug

Helix Architecture page looks broken. It doesn't open in correct format and also do not show any architecture content. Page link : https://helix.apache.org/Architecture.html

To Reproduce

Open page : https://helix.apache.org/Architecture.html Browser tried : Google chrome

Expected behavior

Page should open with all correct formatting.

Additional context

Screen shot :