Support Forums: Condense code blocks by default

[Clorith]

Code blocks are set to a fixed size, leading to a need to scroll to see the full content, this helps keep pages short so you don't get overwhelmed, but when actually looking through code or debug data, it can be a hindrance.

The DevHub already has this solved by allowing you to expand/collapse the code, on.only showing a few lines by default.

Relateed #2107, #815