refactor: Docs on latest should point to main TF module

[MichaelThamm]

Issue

Currently, we have 2 versions of our docs and 2 versions of our TF modules:

1. track-2
2. latest

Soon we will also have track-3 which will be cut from latest.

Solution

The TF modules should point to their respective sources:

RTD	?ref=
track-2	track/2
track-3	track/3
latest	main

Checklist

• I have added or updated relevant documentation.
• PR title makes an appropriate release note and follows conventional commits syntax.
• Merge target is the correct branch, and relevant tandem backport PRs opened.

Context

Since we default RTD to our latest track e.g., today track-2 and early next cycle track-3, we can be confident that our users will only land here on purpose. Or via a direct link with .*/latest/.* in the URL.

• chore: update cos-lite tutorial #323 (comment)

Testing Instructions

Upgrade Notes