[clang] [clang][doc]: Merge entries with duplicate content. (PR #134089)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

This is what I'm getting (I applied the patch locally, re-ran clang-tblgen, then re-ran `make html` to make the docs):
![Screenshot 2025-04-07 083145](https://github.com/user-attachments/assets/4749dac5-2f53-479e-9253-7cd1cf2af00c)


https://github.com/llvm/llvm-project/pull/134089