[lld] [llvm] [WebAssembly] Fix typos (PR #219339)

[Heejin Ahn via llvm-commits]

aheejin wrote:

I submitted mass clang-formatting PRs on Wasm source code like years ago but yeah maybe it's worth doing them again. But they can be done in follow-ups I think.

After we moved to Github, because the CI checks the formatting, I think we have less instances of ill-formatted code though than before.

https://github.com/llvm/llvm-project/pull/219339