[llvm-branch-commits] [llvm] [AMDGPU][docs][NFC] Replace gfx940 with gfx942 in the gfx940 ISA doc (PR #126906)

[Fabian Ritter via llvm-branch-commits]

https://github.com/ritter-x2a ready_for_review https://github.com/llvm/llvm-project/pull/126906