Fix comment-rulers.

llvm-svn: 149922
diff --git a/llvm/lib/Support/DataStream.cpp b/llvm/lib/Support/DataStream.cpp
index fa8edc7..6b4cb64 100644
--- a/llvm/lib/Support/DataStream.cpp
+++ b/llvm/lib/Support/DataStream.cpp
@@ -1,4 +1,4 @@
-//===--- llvm/Support/DataStream.cpp - Lazy streamed Data               ---===//
+//===--- llvm/Support/DataStream.cpp - Lazy streamed data -----------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //