Add comments to the code blocks.

[ashutoshrana171]

Description

Adding comments to code blocks for documentation.

Motivation and Context

Large Language Models chunk the training data and the code blocks are handy chunks for LLMs. There are no comments currently for the code blocks in the documentation.

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] Refactor (non-breaking change which improves implementation)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Non-functional change (xml comments/documentation/etc)

Checklist:

• [x] My code follows the code style of this project.
• [x] I have read the CONTRIBUTING document.
• [x] My branch follows the naming convention bug-<issue#>-<description> or feature-<issue#>-<description>