1.8 is no longer supported on this forum.
You have already been informed of this several times.
Warning points and account restrictions have been logged and assigned.
The Docs are open source on GitHub like everything else Forge-related.
This conversation has been had many times with many people and it usually boils down to the devs preferring to continue working on Forge itself rather than writing pretty docs.
Given that we're dealing with undocumented, decompiled Minecraft code anyway folks are expected to have at least some ability to understand how code works by reading it.
I see the issue now.
This is an issue with how Twitch does things, they rehost everything they need, including Forge stuff, and it appears at least part of their process is manual and hasn't been done yet, so they're not pulling Forge's 1.16.2 stuff right now.