[clang-tidy][NFC] Qualify `makeRule` call in test, for consistency with other calls.

One call `makeRule` is unqualified (and unintentionally relying on ADL to
resolve correctly). This revision qualifies that call for consistency and to
drop use of ADL.

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@369915 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed