Fix a long comment line

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@281275 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Frontend/CodeGenOptions.def

-//===--- CodeGenOptions.def - Code generation option database ------ C++ -*-===//
+//===--- CodeGenOptions.def - Code generation option database ----- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //