docs: override code formatting for CLI commands

[textbook]

Closes #26614

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• angular.io application / infrastructure changes
• Other... Please describe: Documentation style fix

What is the current behavior?

Issue Number: 26614

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

[mary-poppins]

You can preview 0c4247e at https://pr26619-0c4247e.ngbuilds.io/.
You can preview e0e9c17 at https://pr26619-e0e9c17.ngbuilds.io/.

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