[lld] [lld][test] filecheck typo fixes (PR #93471)

[via llvm-commits]

klensy wrote:

Current:
```
Failed Tests (4):
--
  | lld :: ELF/aarch64-cortex-a53-843419-thunk-align.s
  | lld :: ELF/arm-thumb-branch-rangethunk.s
  | lld :: ELF/dso-undef-size.s
  | lld :: MachO/compact-unwind-foldings.s
```

`compact-unwind-foldings.s` still stuck from last try, and for rebased ones need help too.

https://github.com/llvm/llvm-project/pull/93471