fix(apps/docsite): code blocks colorization

[hpierre74]

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (master@e1a74ac). Click here to learn what that means.
The diff coverage is n/a.

❗ Current head 25562d7 differs from pull request most recent head bc8354c. Consider uploading reports for the commit bc8354c to get more accurate results

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