ClangFormatStyleOptions.rst should ALWAYS be autogenerated from Format.h using clang/docs/tools/dump_format_style.py if not its liable to get removed leaving options undocumented.
This revision reworks the documentation for D73354: clang-format: insert trailing commas into containers. D73768: clang-format: [JS] document InsertTrailingCommas. to ensure we can continue to regenerated
Fix other minor changes that ensure the documentation remains consistent (Format.h obviously got re clang-formatted after the rst had been regenerated previously)
Generated documentation will look like