Partial revert of "NFC - Various typo fixes in tests"

This partially reverts r336268 since it causes buildbot failures.

Added FIXME at the places where the CHECKs are misspelled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336323 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed