[Doc][25.9.23] Assumed typo in CHANGELOG.md

[kendegemaro]

The Release 25.9.23 PR #8708 introduced a surprising markdown "#"-heading-formatting into the changelog list, that assumedly originates from a typo:

flatbuffers/CHANGELOG.md

Lines 10 to 12 in 27325e0

	* Swift - Adds new API to reduce memory copying within swift (#8484)
	* Rust - Support Rust edition 2024 (#8638)
	# [:C++] - Use the Google Style for clang-format without exceptions (#8706)

I'd like to make my first PR contribution, is it as easy as changing the md file? Anything else to consider?