Auto merge of #125007 - klensy:filecheckty, r=Mark-Simulacrum

fix few typos in filecheck annotations

Inspired by rust-lang/rust#123886 (comment)

`rg -g '*.rs' '//\s+?[\w-]+(-[\w]+):' -r '$1' -oNI | sort -u`

Should https://llvm.org/docs/CommandGuide/FileCheck.html#cmdoption-FileCheck-ignore-case be used for case-insensetive match for filecheck?