Fix file headers. NFC

llvm-svn: 355176
diff --git a/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp b/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
index fadea9b..7b1f204 100644
--- a/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
+++ b/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
@@ -1,4 +1,4 @@
-//===--- RewriteObjC.cpp - Playground for the code rewriter ---------------===//
+//===-- RewriteModernObjC.cpp - Playground for the code rewriter ----------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.