[📄 DOCS] Document -editable and -editing suffixes to class name when using `editable` in table

[arcanaxion]

🔍 Issue Description

Following up on #2776

cell_class_name docstring should note that -editable or -editing are suffixed to the class name if the cell is editable

📜 Code of Conduct

• I have checked the existing issues to avoid duplicates.
• I am willing to work on this issue (optional)

✅ Acceptance Criteria

• The documentation has been generated without errors.
• The new text has been reviewed for grammar and clarity.
• The 90-character line length limit has been followed where possible.
• All links and cross-references in the documentation work correctly.
• If applicable, screenshots of the updated documentation are included in the pull request.