[docs] Added a stub page for the writers to edit

[sheila-semrush]

Motivation and Context

It's just a stub page for the writers to start working on their own section on our website.
The page will be available by this url: https://developer.semrush.com/intergalactic/content/punctuation/punctuation

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 not work as expected).
• Nice improve.

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly or it's not required.
• Unit tests are not broken.
• I have added changelog note to corresponding CHANGELOG.md file with planned publish date.
• I have added new unit tests on added of fixed functionality.