Allow Changing the Top-Level Title of SUMMARY.md Without Breaking Synchronization

[ykla]

I hope that GitBook will allow the top-level heading in SUMMARY.md to be customized in other languages.

Currently, if the default “# Table of Contents” heading is modified, GitBook's interface becomes unsynchronized with SUMMARY.md, and synchronization between GitHub and GitBook will not recover unless the commit history is forcibly reverted.

For multilingual documentation, being able to localize the main heading # Table of Contents in SUMMARY.md is essential—for example, it is called 目录 in Chinese. Allowing this customization without breaking automatic synchronization would greatly improve GitBook’s usability and internationalization support.

Thank you for considering this enhancement.