Issue #5279 -> Introduce horizontal scrolling to code-blocks

Closes issue #5279

This commit re-introduces horizontal scrolling to docs' codeblocks

Docker-DCO-1.1-Signed-off-by: O.S. Tezer <ostezer@gmail.com> (github: ostezer)
Merge pull request #6458 from ostezer/docs-code-block-scrolling

Issue #5279 -> Introduce horizontal scrolling to code-blocks