Fix the \param comments to have the parameter name.

Summary: This fixes the build break introduced in rL215472

Reviewers: pcc

Subscribers: klimek, cfe-commits

Differential Revision: http://reviews.llvm.org/D4875

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@215476 91177308-0d34-0410-b5e6-96231b3b80d8