[clang-tools-extra] [clang-doc]: Enable horizontal wrapping on longer function definitions (PR #181417)

[Samrudh Nelli via cfe-commits]

SamrudhNelli wrote:

@ilovepi @evelez7 Which format do you prefer for wrapping?
1) Initial vertical
<img width="1827" height="469" alt="screenshot-2026-02-14_03-05-05" src="https://github.com/user-attachments/assets/51187125-30a3-4b17-a3b1-c53fb39f88a4" />
2) Flex wrap similar to clang-format
<img width="1422" height="532" alt="image" src="https://github.com/user-attachments/assets/9b7d88f0-7ec8-4c15-a4ce-67a512f4cdc2" />
3) Flex wrap after a default specified distance
<img width="1423" height="568" alt="image" src="https://github.com/user-attachments/assets/f0e823e2-236e-4fbc-8482-837b66e50ea0" />

https://github.com/llvm/llvm-project/pull/181417