Adding scroll bars to code blocks within Command Line Interface

[EdwardChaplinArchilizer]

Purpose

Adding a scroll bar to the code blocks used in the Command Line Interface section where currently text runs off the side of the page cant cant be viewed.

This PR will test if this method works, and a second PR will follow to update any other sections similar to the one in Command Line Interface.

Key additions:

Adding a scroll bar to the code blocks used in the Command Line Interface section.

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

Release Notes

Adding a scroll bar to the code blocks used in the Command Line Interface section.

Reviewers

@dnenov
@achintyabhat
@QilongTang

Informed
@Amoursol