Nit cleanup in LangRef about dereferenceable metadata

Reviewed By: vsk

Differential Revision: http://reviews.llvm.org/D12847


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247982 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed