[llvm] Group the InstrumentationTests target with other LLVM unit test targe… (PR #170041)

[Richard Thomson via llvm-commits]

LegalizeAdulthood wrote:

> Sorry. I'm not sure I'm a right person for the review,

Well, you did find a typo, so I will correct that.  It should've been `LLVM`, not `LLM`.  LOL

https://github.com/llvm/llvm-project/pull/170041