[llvm] [NFC][MemProf] Fix typo in type name (PR #140500)

[Snehasish Kumar via llvm-commits]

snehasish wrote:

### Merge activity

* **May 19, 7:09 PM EDT**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/140500).


https://github.com/llvm/llvm-project/pull/140500