[flang-commits] [flang] [flang][docs] Refresh stale status in do concurrent mapping doc (PR #224838)

[via flang-commits]

Glitch-On wrote:

While updating the doc I noticed two related spots that are also stale but felt out of scope for this change:

- The `DoConcurrentConversionPass` description in `flang/include/flang/Optimizer/OpenMP/Passes.td` still says only simple loops map to `parallel do` and lists "more extensive testing" as a TODO.
- The doc does not mention that `-fopenmp-simd` disables the mapping: the frontend resets it to `none` with a warning (see `flang/lib/Frontend/FrontendActions.cpp`).

Happy to fix both here if preferred, or in a follow-up.

https://github.com/llvm/llvm-project/pull/224838