Fixing Docs Menu and Missing Pages

[candideu]

• Adding missing pages to menu
• Re-arranging a menu item
• Foxing broken image

Revives the current PRs, which I accidentally closed:

• https://github.com/djyde/cusdis/pull/220
• https://github.com/djyde/cusdis/pull/219

[vercel[bot]]

@candideu is attempting to deploy a commit to the RandySoft Team on Vercel.

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