Add CODENOTIFY file for document changes

[tdcmeehan]

Description

Notify documentation writer @steveburnett on documentation changes for quality.

Motivation and Context

@steveburnett is a professional documentation writer and is motivated to improve our documentation by helping their review.

Impact

Notifications on document changes.

Test Plan

See tdcmeehan#3 for example notification

Contributor checklist

• Please make sure your submission complies with our development, formatting, commit message, and attribution guidelines.
• PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced.
• Documented new properties (with its default value), SQL syntax, functions, or other functionality.
• If release notes are required, they follow the release notes guidelines.
• Adequate tests were added if applicable.
• CI passed.

Release Notes

Please follow release notes guidelines and fill in the release notes below.

If release note is NOT required, use:

== NO RELEASE NOTE ==