[llvm] [NFC] Rename variable to better document usage. (PR #71973)

[James Henderson via llvm-commits]

https://github.com/jh7370 commented:

Naming is hard :)

I feel like it may be a mistake to rename this variable. Although the code is currently implemented for ELF only, I don't see why it couldn't work for other formats too, if someone were to take the time to implement it, as the concept of data versus text is pretty general. Is there a reason to think that the current name is causing confusion?

https://github.com/llvm/llvm-project/pull/71973