[clang-tidy] use CHECK-NOTES in tests for bugprone-argument-comment

Summary:
This patch uses CHECK-NOTES for the tests.
Its part of an effort to test *ALL* generated diagnostics in clang-tidy,
as emitted notes were previously ignored.

Reviewers: alexfh, aaron.ballman, hokein

Reviewed By: alexfh

Subscribers: xazax.hun, cfe-commits

Differential Revision: https://reviews.llvm.org/D52178

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@342458 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed