Make the rest of file header comments consistent in format and style


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20048 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/Alpha.h b/lib/Target/Alpha/Alpha.h
index 04daaff..6e22c18 100644
--- a/lib/Target/Alpha/Alpha.h
+++ b/lib/Target/Alpha/Alpha.h
@@ -1,4 +1,4 @@
-//===-- Alpha.h - Top-level interface for Alpha representation -*- C++ -*-//
+//===-- Alpha.h - Top-level interface for Alpha representation --*- C++ -*-===//
 // 
 //                     The LLVM Compiler Infrastructure
 //