feat: added documentation for templatize

[PranshuSrivastava]

Pull Request Template

Description

Added documentation for templatize.

Type of change

Please delete options that are not relevant.

• 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 not work as expected).
• This change requires a documentation update.

Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have added corresponding tests.
• Any dependent changes have been merged and published in downstream modules.

Relevant Screenshot:

This is what the template would look like:

And this is what the testcase would look like:

[Sonichigo]

It would be great to have images showing how after the templatize feature would look like

[PranshuSrivastava]

added the images in the PR description.

[Sonichigo]

LGTM